Amazon’s third party seller requirements on accepting returns sure seems ambiguous to me. In one place it says part of the a to z terms allow someone to return a product if they “changed their mind”. In another place on their site it says third party sellers can have their own return policies and to read it. Then on THAT same page it says sellers must give a way to return and if they don’t, the buyer can file a claim!
I have a few high demand items to sell and the last thing I want is someone to use it for a few months and then me be stuck accepting a used item back. At least with ebay/paypal they have to have a very limited scope of reasons, but you save 5% in fees via amazon.