ZenTrade is a free Chrome add-on developed by Zen Arbitrage that aims to help users discover hidden profits in Amazon's trade-in store. With this tool, users can easily search Amazon's trade-in store to find products that can be bought at a lower price and then traded in for a higher value.

The add-on provides a simple and user-friendly interface that allows users to input specific search criteria such as product category, condition, and price range. ZenTrade then quickly generates a list of potential products with potential profit margins. This information can be incredibly valuable for anyone looking to make money through Amazon's trade-in program.

ZenTrade is a handy tool for individuals who are interested in finding profitable trade-in opportunities on Amazon. Whether you're a seasoned trader or just starting out, this add-on can help you uncover hidden profits and make the most of the trade-in store.