The  amazon trade-in program https://pirscapital.com/blog/the-amazon-trade-in-program-is-it-for-you/  allows you to sell the items that you no longer want, free of charge. It’s pretty straightforward and convenient. You can check the highest value of the product on the Amazon Trade-In page. Furthermore, Amazon provides you a quick quote with a trade-in value for your items along with free shipping. Follow the steps provided by Amazon and once Amazon accepts your product, you will receive a gift card from Amazon. 

Initially, there was no requirement to verify the condition of the product. Recently, Amazon introduced a way to check the product and verify the product and offer trade-in value. This is rewarding for the users who trade quality products.