Your listing offers 60 days returns which means you accept returns for any reason. Hopefully if the buyer opens a returns they will use a buyer's remorse reason rather than a reason that suggests the item was not as described. If they use a buyer's remorse reason they will have to pay for return shipping as that is what your return policy states. If they use a 'not as described' reason, the seller is responsible for sending a return label or refunding without a return. Unfotunately, ebay does not 'investigate' to see if the reason the buyer used is accurate.