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Write down all the details about your sunglasses. Evaluate the overall condition of the glasses. Measure your sunglasses. Research similar sunglasses online. Locate anything that came with the glasses.

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In order to sell your sunglasses, you need to have a good sense of what you are selling. Compile as much info as you can about the sunglasses. Look for any labels, read over any paperwork, and do your best to evaluate the glasses objectively. Be sure to include:  The brand and model. The lens shape (such as round, oval, square, oblong, or aviator-style). The lens color (such as amber, grey, black, or brightly colored). The frame color (red, blue or black) and material (plastic, metal). Any other characteristics (such as polarized lenses, UV/UVB protection, embellishments, or if they are vintage). Determine which of the following designations to give your glasses. Be honest! If you try to misrepresent the quality of the glasses you will only end up with dissatisfied customers. Here are some guidelines:  New:  A brand-new, unused, unopened item in its original packaging, with all original packaging materials included. Used-like new: An item in perfect condition. The original packaging may be missing, but the product is intact and pristine. There are no signs of wear on the item or its packaging. Used-very good: A well-cared-for item that has seen a bit of use, but remains in very good condition. The item should be complete, undamaged, and unmarked. It may show some limited wear. Used-good: This is an item that shows wear from consistent use, but it should be in good condition and work perfectly. The item may be marked or show other signs of previous use. Used-acceptable: This is an item that is fairly worn but continues to work. The item may have aesthetic issues, like scratches or dents. Sunglasses measurements are listed in millimeters. Use a flexible tape measure to determine the width of each lens, the width of the bridge connecting the 2 lenses, and the length of 1 arm. Write these measurements down so you don't forget. Use the information you've compiled to search for similar items online. This can help you find the right descriptive terms, decide if your sunglasses are in demand, and help you start thinking about what price you will charge. This might include a case, accessories, or even papers of authenticity (for high-end designer brands). Including these items can often get you more money for the glasses.