With the advent and release of Avatar Legends: The Fighting Game in the summer of 2026, developed by Gameplay Group International and distributed by PM Studios, the standard of aesthetic and functional requirement for cosplayers has reached unprecedented levels. In this scenario, the Creation of 3D "Bending" Effects (Fogo e Água) for Cosplay – Avatar Legends: The Fighting Game ceases to be merely decorative and becomes a test of technical mastery, where the manufacturing of practical props (props) for the representation of fluid elements requires the integration of material science and visual design. The elements of Fogo e Água, when translated into static pieces, demand precise control of light and translucency, as special effects depend on the ability to reproduce refractions and diffractions that, in a real environment, are produced by flames or water currents, and which energetic elements constitute one of the pinnacles of costume engineering.
The Polymerization of Resina Epóxi is characterized by intensely exothermic cross-linking reactions, which implies rigorous care regarding temperature and curing time to avoid bubbles that compromise optical clarity. By suspending this crinkled reflective film inside a resin matrix, whose refraction differs subtly from air and plastic (refractive index generally between $1.50$ and $1.53$ for transparent photoresins), light undergoes multiple refractions, creating the desired depth effect to simulate water or fire. The combination of Celofane Furta-Cor, which acts as a variable color filter, with high-density Micro-LEDs allows modulating the intensity and tone of the glow, transforming the piece into a mini Fabry-Pérot interferometer that reacts to the viewing angle. Following the Definitive Practical Guide: Creation of 3D "Bending" Effects (Fogo e Água) for Cosplay – Avatar Legends: The Fighting Game, and paying attention to the conception, the artist can achieve results that rival digital effects, elevating the credibility of the cosplay to previously unattainable levels.
1. The Optical Behavior of Synthetic Elements
The Creation of 3D "Bending" Effects (Fogo e Água) for Cosplay – Avatar Legends: The Fighting Game depends fundamentally on the way light interacts with the synthetic materials that compose the prop. Understanding this behavior allows designing effects that go from mere decorations to true "elemental powers" recognizable by fans.
1.1 Light Manipulation in Media with Different Refractive Indices
The visual success of a bending prop lies in the manipulation of light (photons) through media with different refractive indices. When a film of Celofane Furta-Cor (or pearlescent/holographic cellophane) is inserted into a matrix of Resina Epóxi, the difference in index between air (≈ 1.00) and the resin (generally between $1.50$ and $1.53$ for transparent photoresins) generates multiple refractions.
By suspending this crinkled reflective film inside a resin matrix, whose refraction differs subtly from air and plastic (refractive index generally between $1.50$ and $1.53$ for transparent photoresins), light undergoes multiple refractions.
These refractions create iridescence and goniochromism effects similar to those of a Fabry-Pérot interferometer, producing glints that change color according to the viewing angle – essential for simulating the shimmer of fire or the translucency of water.
1.2 Dispersion, Reflection, and Absorption of Micro‑LEDs
The insertion of light-emitting electronic components inside crystalline polymeric blocks requires an advanced understanding of how light is dispersed, reflected, and absorbed to avoid aesthetic defects and promote illusory realism.
The insertion of light-emitting electronic components inside crystalline polymeric blocks requires an advanced understanding of how light is dispersed, reflected, and absorbed to avoid aesthetic defects and promote illusory realism.
Micro-LEDs provide point light sources that, when passing through the cellophane and resin, are modulated by the optical properties of the set. Adjusting the current and operating temperature of the LEDs ensures that the emitted spectrum remains stable, avoiding color saturation that could "erase" the desired effect.
1.3 Impact of Exothermic Polymerization
The curing phase of the Resina Epóxi also influences optical behavior.
The polymerization of Resina Epóxi is characterized by intensely exothermic cross-linking reactions.
When the amines or anhydrides of the hardening agent initiate the chemical bonds with the epoxy prepolymer, a sudden release of heat occurs.
This heat can temporarily alter the refractive index of the resin and generate micro-bubbles that scatter light undesirably. Therefore, temperature control during curing – for example, using a water bath at 25 °C or applying active cooling – is crucial to preserve optical clarity and avoid aesthetic defects.
1.4 Design Strategies for the Representation of Fluid Elements
- Selection of Filmes Finos: Prioritize Celofane Furta-Cor with a micro-structure pattern that favors controlled light diffusion.
- Distribution of Micro-LEDs: Position the LEDs in a hexagonal network within the resin matrix to ensure uniform coverage and minimize shadows.
- Thermal control of curing: Monitor the temperature with a thermocouple and interrupt the exothermic reaction before the increase exceeds 40 °C, avoiding degradation of electronic components.
- Addition of sub-saturated dyes: Incorporate pigments below 3% of the volume to homogenize the radiation without compromising the transparency necessary for the refraction effect.
1.5 Conclusion
Mastering the Optical Behavior of Synthetic Elements is the foundation of the manufacturing of practical props (props) for the representation of fluid elements in Avatar Legends: The Fighting Game. The careful combination of Resina Epóxi, Celofane Furta-Cor and Micro-LEDs, allied with the control of the exothermic reaction, allows creating "bending" effects that are simultaneously visually impressive and physically stable – a true milestone in the special effects of the cosplay community.
2. Thermodynamics and Electronic Safety: Exothermic Management
The conception and manufacturing of practical props (props) for the representation of fluid and energetic elements constitute one of the pinnacles of costume engineering and special effects. With the advent and release of Avatar Legends: The Fighting Game in the summer of 2026, developed by Gameplay Group International and distributed by PM Studios, the standard of aesthetic and functional requirement for cosplayers has reached unprecedented levels. In this context, the Definitive Practical Guide: Creation of 3D "Bending" Effects (Fogo e Água) for Cosplay – Avatar Legends: The Fighting Game requires a rigorous understanding of materials, specifically regarding the interaction between Resina Epóxi, Celofane Furta-Cor and Micro-LEDs.
Success in creating these effects depends critically on thermal management. The polymerization of Resina Epóxi is characterized by intensely exothermic cross-linking reactions. When the amines or anhydrides of the hardening agent initiate the chemical bonds with the epoxy prepolymer, a sudden release of heat occurs. This chemical phenomenon is not just a curing detail, but a risk factor for the integrity of the prop.
Failure to observe the thermal properties of the resin and the temperature limit of electronic components results in catastrophic damage to the prop. The heat generated during the curing process can melt the insulation of Micro-LEDs or deform the Celofane Furta-Cor positioned inside the matrix, compromising the desired refraction effect. By suspending this crinkled reflective film inside a resin matrix, whose refraction differs subtly from air and plastic (refractive index generally between $1.50$ and $1.53$ for transparent photoresins), light undergoes multiple refractions; however, if the temperature exceeds operational limits, optical clarity and the physical structure of the prop are lost.
Therefore, one of the primordial elements that distinguish amateurs from professionals is the management of variables in the cosplayer's home laboratory. The handling of epoxy compounds is strictly governed by environmental thermodynamic variables and mass ratio. Environmental control of temperature and humidity is vital: the operational window (workability) for optimal handling invariably varies between $20^{\circ}C$ and $30^{\circ}C$.
Environments outside this range present significant risks. In the cold, environments below $15^{\circ}C$ decay the cross-linking metabolism, making the resin dense and viscous. This hinders the correct encapsulation of components and can permanently trap air bubbles that interfere with the optics of the "Bending" effect. To ensure electronic safety and aesthetic quality of the Fogo e Água represented, it is imperative to monitor the resin's temperature curve during curing, ensuring that Micro-LEDs are protected against the exothermic peak.
3. Catalog of Materials and Structural Products
The Definitive Practical Guide: Creation of 3D "Bending" Effects (Fogo e Água) for Cosplay – Avatar Legends: The Fighting Game establishes that the conception and manufacturing of practical props (props) for the representation of fluid and energetic elements constitute one of the pinnacles of costume engineering and special effects. With the advent and release of Avatar Legends: The Fighting Game in the summer of 2026, developed by Gameplay Group International and distributed by PM Studios, the standard of aesthetic and functional requirement for cosplayers has reached unprecedented levels.
For the technical execution of this project, it is fundamental to understand the Optical Behavior of Synthetic Elements. The polymerization of Resina Epóxi is characterized by intensely exothermic cross-linking reactions, which requires stable materials. By suspending this crinkled reflective film inside a resin matrix, whose refraction differs subtly from air and plastic (refractive index generally between $1.50$ and $1.53$ for transparent photoresins), light undergoes multiple refractions. Furthermore, by adding tiny fractions of dyes and pigments (below the saturation threshold, usually in concentrations lower than 3% of the volume), the polymeric matrix starts to scatter light isotropically, homogenizing the radiation.
Below, the indispensable materials detailed for the Brazilian scenario and market (considering specifications for viability between 2024 and the imminent release of Avatar Legends: The Fighting Game in 2026), focusing on credibility brands for manufacturing:
| Input Category | Recommended Product/Brand | Specifications and Sale |
| :--- | :--- | :--- |
| Compact Illumination | Micro-LEDs SMD (Fairy Lights) | Distribution every $5\text{ to }10\text{ cm}$; Very low consumption, operated by 1x or 2x CR2032 batteries (included in mini-bases); does not require Arduino; high brightness and micro-switch (on/off). Approximate price: R$ 30.00. Found on Shopee, Mercado Livre, Proesi. |
| Multiple Refraction | Celofane Furta-Cor (Pearly / Holographic) | Thin plastic ($70\text{ x }90\text{ cm}$ common). Emulates iridescence with a very high prism reflection rate upon contact with resin. |
4. Chemical Behavior and Procedural Risks
With the advent and launch of Avatar Legends: The Fighting Game in the summer of 2026, developed by Gameplay Group International and distributed by PM Studios, the standard of aesthetic and functional requirement for cosplayers reached unprecedented levels. In this scenario, the conception and manufacture of practical props for the representation of fluid and energetic elements constitute one of the peaks of costume engineering and special effects. However, the successful execution of the Definitive Practical Guide: Creation of 3D "Bending" Effects (Fogo e Água) for Cosplay – Avatar Legends: The Fighting Game depends strictly on the mastery of the chemical reactions involved.
One of the primordial elements that distinguish amateurs from professionals is the management of variables in the cosmaker's domestic laboratory. The handling of epoxy compounds is strictly governed by environmental thermodynamic variables and the mass ratio. The polymerization of Resina Epóxi is characterized by intensely exothermic cross-linking reactions, which requires precise control to prevent the generated heat from degrading the Celofane Furta-Cor or damaging the Micro-LEDs inserted inside the piece.
Environmental Control of Temperature and Humidity
The operational window (workability) for optimal handling invariably varies between $20^{\circ}C$ and $30^{\circ}C$. Non-compliance with these parameters introduces critical procedural risks:
- In the Cold: Environments below $15^{\circ}C$ decay the cross-linking metabolism, making the resin dense, viscous and permanently trapping air bubbles. These gaseous inclusions interfere directly with the transparency of the medium, compromising the visual continuity of the fluid effect.
- In the Heat: Excessive temperatures accelerate the exothermic reaction, potentially causing cracks due to thermal shock or premature yellowing of the resin, reducing the chromatic fidelity of the Fogo e Água elements.
The Optical Behavior of Synthetic Elements
Parallel to chemical management, the visual success of a bending prop lies in the manipulation of light (photons) through media of different refractive indices. The insertion of light-emitting electronic components inside crystalline polymeric blocks requires an advanced understanding of how light is scattered, reflected, and absorbed to avoid aesthetic defects and promote illusory realism.
By suspending this crinkled reflective film inside a resin matrix, whose refraction differs subtly from air and plastic (refractive index generally between $1.50$ and $1.53$ for transparent photoresins), light undergoes multiple refractions. This phenomenon is maximized by the physics of iridescence and goniochromism (Filmes Finos). Furthermore, by adding tiny fractions of dyes and pigments (below the saturation threshold, generally in concentrations lower than 3% of the volume), the polymeric matrix starts to scatter light isotropically, homogenizing the radiation emitted by the LEDs and creating the volumetric appearance of energetic elements in motion.
5. Methodology: Building the “Water” Bending (Katara, Korra)
Guide Context
This chapter integrates the Definitive Practical Guide: Creation of 3D "Bending" Effects (Fogo e Água) for Cosplay – Avatar Legends: The Fighting Game. With the advent and launch of Avatar Legends: The Fighting Game in the summer of 2026, developed by Gameplay Group International and distributed by PM Studios, the standard of aesthetic and functional requirement for cosplayers reached unprecedented levels. Below we detail the production sequence of the water bending, focusing on Resina Epóxi, Celofane Furta-Cor and Micro-LEDs.
5.1 Construction of the Kinetic Core (The Skeleton)
Procedure
Construction of the Kinetic Core (The Skeleton) Start by bending solid malleable aluminum wires — optionally covering them with clear/transparent thermoplastic tubing such as PETG — thus outlining the length of the conjured water
- Skeleton modeling: bend aluminum wires (2 mm diameter) to reproduce the curvilinear trajectory of the ascending arcs typical of Katara's abilities.
- Optional coating: slide PETG tubes over the wires to create transparent surfaces that facilitate the passage of light from the Micro-LEDs and reduce mechanical interference.
- Fixation: use flexible nylon brackets to join segments, ensuring the skeleton maintains the dynamic shape even under transport vibrations.
Checkpoint – Check the rigidity of the skeleton before proceeding; it must support its own weight without bending.
5.2 Preparation of the Epoxy Resin Matrix
The polymerization of Resina Epóxi is characterized by intensely exothermic cross-linking reactions. Therefore:
- Mixing: combine 100 g of epoxy resin with 30 g of hardening agent (3.33:1 ratio). Mix slowly to minimize heat generation.
- Thermal control: perform the mixing in an environment with temperature ≤ 22 °C and use a contact thermometer to monitor the temperature rise (it must not exceed 35 °C).
- Optical additives: add 0.5% to 2% of transparent dye (e.g.: blue-cyan dye) and 1% of Celofane Furta-Cor cut into 0.2 mm strips. This combination creates the “raw foam” cited in the report:
“The fluid maneuvers present in Avatar Legends, notably the ascending arcs in evasive movements or in the continuous water projectile of the character Katara's ‘Tidal Surge’ ability, are based on an aesthetic physics of transparency blended with raw foam.”
5.3 Integration of Micro-LEDs
- Selection: opt for 0.5 mm wide RGB Micro-LEDs strips, with PWM control for color and intensity variation.
- Distribution: position the LEDs along the skeleton, spaced every 15 mm, so that light penetrates the resin and enhances internal refractions.
- Programming: configure brightness cycles that simulate the fluidity of water (soft pulses of 0.2 s to 0.8 s) and synchronize with the game's music or sound effects.
5.4 Curing and Optical Finishing
- Controlled curing: pour the resin mixture over the skeleton already inserted with the LEDs, covering it completely. Let cure for 24 h in a dark environment, keeping the temperature stable.
- Refraction verification: after curing, evaluate the optical behavior of the synthetic elements. According to the report:
“By suspending this crinkled reflective film inside a resin matrix, whose refraction differs subtly from air and plastic (refractive index generally between $1.50$ and $1.53$ for transparent photoresins), light undergoes multiple refractions.”
Test by rotating the prop at different lighting angles to confirm the desired dispersion.
- Polishing: lightly sand the external areas with 400 – 600 grit wet sandpaper and apply a thin layer of acrylic varnish to protect the surface without altering the refractive index.
5.5 Final Evaluation and Integration into Cosplay
- Movement test: simulate the ascending arcs and the “Tidal Surge” in a stage rehearsal, observing the continuity of light and the fluidity of the form.
- Adjustments: if there are shadow points or refraction flaws, add additional strips of Celofane Furta-Cor or micro-LEDs until reaching the desired appearance.
- Documentation: record the LED settings (PWM code, colors) and the exact ratio of additives in the resin for future replication.
Technical Summary
The combination of Resina Epóxi, Celofane Furta-Cor and Micro-LEDs allows reproducing the aquatic aesthetic of Katara and Korra, meeting the requirement of advanced special effects described in the Definitive Practical Guide. The process emphasizes the control of the resin's exothermic reaction, the manufacture of practical props for the representation of fluid elements and the optimization of the Optical Behavior of Synthetic Elements to create a water bending that is visually impactful and functional in cosplay events.
6. Methodology: Building the 'Fire' Bending (Azula, Zuko)
Launch Context
With the advent and launch of Avatar Legends: The Fighting Game in the summer of 2026, developed by Gameplay Group International and distributed by PM Studios, the standard of aesthetic and functional requirement for cosplayers reached unprecedented levels. This guide, titled Definitive Practical Guide: Creation of 3D "Bending" Effects (Fogo e Água) for Cosplay – Avatar Legends: The Fighting Game, focuses on faithfully reproducing the intense manifestations of Fogo e Água that appear in the game mechanics.
1. Chemical and Thermal Fundamentals
- The polymerization of Resina Epóxi is characterized by intensely exothermic cross-linking reactions. This characteristic generates considerable heat during curing, which can be harnessed to create an “internal glow” that simulates the incandescent energy of the fire bending.
- By suspending this crinkled reflective film inside a resin matrix, whose refraction differs subtly from air and plastic (refractive index generally between $1.50$ and $1.53$ for transparent photoresins), light undergoes multiple refractions. This optical property allows the effect to appear three-dimensional even on flat surfaces.
2. Structure of the Radiant Core
- Verticalized Radiant Core vs: the focal point of the effect must be aligned vertically with the viewer's axis of vision, reproducing the dynamics described in “The engineering of heat imposes aggressive dynamics”.
- Build a lightweight skeleton of wire or copper wire (diameter < 2 mm) that serves as support for the Resina Epóxi and for the Micro-LEDs. This core will be the “heart” of the flame, allowing energy to flow in a controlled manner.
3. Layer of Celofane Furta-Cor
- Wrap the core with thin layers of Celofane Furta-Cor. This material acts as a color diffuser, scattering the light from the LEDs and creating the color transitions typical of flames (red → orange → yellow).
- To avoid excessive saturation, add liquid pigments in concentrations lower than 3% of the total resin volume, as indicated in the report: “By adding tiny fractions of dyes and pigments (below the saturation threshold, generally in concentrations lower than 3% of the volume), the polymeric matrix starts to scatter light isotropically, homogenizing the radiation”.
4. Integration of Micro-LEDs
- Distribute Micro-LEDs along the core, preferably in groups of 3-5 LEDs per layer, to generate intense points of brightness that simulate the "projectile explosions" described in “In the newly announced Avatar Legends, the elite royalty holds mechanics where fire behaves vertically in massive walls and explosive projectiles in constant swinging, demanding, in the game, agility and impulses (especially in the Flow stance and Azula's Firelord Mode superpowers that flood the arena of the screen)”.
- Use PWM controllers to vary the intensity and create heat pulses that mimic dynamic combustion.
5. Curing and Finishing
- Let the Resina Epóxi cure for 24 h in an environment with controlled temperature (20-25 °C). The exothermic curing phase must be monitored to avoid overheating that could compromise the integrity of the Celofane Furta-Cor.
- After curing, gently sand the external edges and apply a matte anti-reflection varnish on areas that should not reflect light, preserving the transparency of the central zone where the flame will be visible.
6. Performance Verification (Checkpoint)
- Checkpoint: activate the Micro-LEDs and observe the diffusion of light through the layers of Celofane Furta-Cor. The effect should present smooth color transitions and brightness pulses that resemble real flames. If there are excessively opaque areas, adjust the thickness of the cellophane layer or reduce the pigment concentration.
7. Final integration into cosplay
- Attach the Vertical Radiant Core to Azula/Zuko's armor or accessory using silicone mounts or high-strength Velcro straps.
- Ensure that the power supply for the Micro-LEDs is hidden and that the cables can be disconnected for transport, complying with safety recommendations for special effects.
Energy and aesthetics – energetic elements constitute one of the pinnacles of costume engineering, and mastering the manufacturing of practical props (props) for representing fluid elements is essential to achieve the realism required by Avatar Legends.
With these steps, you will have a fire prop that combines Resina Epóxi, Celofane Furta-Cor and Micro-LEDs to convincingly reproduce the 3D "Bending" Effects Creation (Fogo e Água) for Cosplay – Avatar Legends: The Fighting Game.
7. Biomechanical Weight Anchoring: Ergonomics, Friction, and Neodymium
To ensure the functionality and safety of the prop during use, the fastening system must allow total freedom of movement. During the combat tournament of harsh dodge mechanics enabled by Flow agility, the epoxy prop must float and rotate following the wrists, forearms or withstand severe gravity attached to the clothes (instant floating invocation). The correct implementation of these supports prevents injuries and ensures that the visual effects of "Bending" remain stable.
Follow the technical procedure below for the installation of the anchoring system:
- Configuration of Low-Engineering Tension Supports: Start assembling the support structure using the model that displays the classic adjustable ring in bands. This component must be assembled from interlaced pliable elastics, providing the necessary elasticity to absorb the impact of sudden movements without losing the position of the prop.
- Installation of Anchoring Points and Hooks: Proceed with the fixing of the retention mechanisms inside the prop or on the garment. The elements must be anchored under small cuts and locked together with sliding hooks, allowing dynamic adjustment of tension while the cosplayer moves.
- Application of the Magnetization System: Integrate the magnetic points using the magnetization force in buckle buttons or simple rings fixed in mechanical holes. This connection must be strategically positioned to allow the prop to separate or rotate under controlled force, simulating the physics of floating invocation.
- Structural Reinforcement with Fishing Lines: To guarantee the integrity of the system against severe gravity, finalize the assembly by passing robust cords/fishing lines through the knots. This step is crucial for uninterrupted handling, acting as a safety retainer should the magnetization force be subjected to extreme stress.
Ergonomics Checkpoint: After installation, perform mobility tests simulating the harsh dodges of Flow agility. Ensure that the epoxy prop floats and rotates following the wrists and forearms without causing discomfort, cuts, or circulatory restriction.
8. Final Treatment, Varnishing (Wet Look) and Expert Tips
In the context of the Definitive Practical Guide: 3D "Bending" Effects Creation (Fogo e Água) for Cosplay – Avatar Legends: The Fighting Game, the manufacturing of practical props (props) for representing fluid and energetic elements constitutes one of the pinnacles of costume engineering and special effects. With the advent and launch of Avatar Legends: The Fighting Game in the summer of 2026, developed by Gameplay Group International and distributed by PM Studios, the standard of aesthetic and functional requirement for cosplayers has reached unprecedented levels, demanding a finish that not only beautifies but also protects the complex interaction between the Celofane Furta-Cor and the Micro-LEDs.
The final stage concludes the protection against biological weathering and direct sun damage during prolonged exposures in combat gyms and fair arenas. Opaque surfaces, sometimes demolded slightly rough at microscopic levels (micro-valleys that scatter lighting accidentally harming mirror reflections and stained-glass transparency of the finished piece) or acrylics scratched with exhaustive lifespans need sealants.
To recover all the saturated vibrancy of oceanic depth or the original crystalline glowing flames of the game in computer graphics and perennially achieve the coveted aesthetically unbeatable standardization baptized worldwide under the protective industrial slang "Wet Look" (eternally and organically wet appearance), the cosplayer must apply thin and level layers of varnish specific for resin. The Wet Look also durably protects polyester resins if used, sealing the surface against wear.
The Optical Behavior of Synthetic Elements
When suspending this crinkled reflective film inside a resin matrix, whose refraction differs subtly from air and plastic (refractive index generally between $1.50$ and $1.53$ for transparent photoresins), light undergoes multiple refractions. The final varnishing is crucial to maintain the optical integrity of this system. It is fundamental to consider that the polymerization of Resina Epóxi is characterized by intensely exothermic crosslinking reactions; therefore, ensure that the piece is completely cured and at room temperature before the application of the final varnish to avoid adverse reactions or clouding.
Expert Tips:
- Preparation: Lightly sand the surface with wet sandpaper (grit 1000 to 2000) between coats of varnish to remove microscopic imperfections.
- Application: Apply the varnish in a dust-free environment to avoid particles getting trapped in the "Wet Look" layer, which would compromise the illusion of fluid Fogo e Água.
- Verification: Inspect the piece under direct light to ensure that the "micro-valleys" have been filled and that the stained-glass transparency has been restored, enhancing the shine of the internal Micro-LEDs.
Estimated Budget
| Item | Price range | Source |
| --- | --- | --- |
| Epoxy Resin Kit 2004 + Hardener 3154 (1.5 kg) | $31.40 - $35.00 | Estimated FX |
| SMD Micro-LED Fairy Lights (Kit of 3 units) | $6.00 - $10.00 | Estimated FX |
| Pearlescent Iridescent Cellophane (Roll or large sheets) | $3.00 - $5.00 | Estimated FX |
| Pigment Paste / Stained Glass Paint (Basic color kit) | $3.00 - $7.00 | Estimated FX |
| N52 Neodymium Magnets (Pair 25x5mm) | $4.00 - $8.00 | Estimated FX |
Estimated conversion based on a reference FX rate; local retail prices may differ.
