Where can I see a list of used products eligible for exchange?

Excuse me, I'm interested in exploring the options for exchanging used products, but I'm having difficulty finding a clear list of what's eligible for exchange. Could you please assist me in navigating to a page or resource that outlines the criteria and categories of used products that are acceptable for this exchange process? It would be greatly appreciated if you could provide a direct LINK or step-by-step instructions on how to access this information. Thank you for your time and assistance in this matter.