I'm starting to think there's really no full proof way for sellers to protect themselves against PayPal charge backs. Recently I came to an agreement with a buyer that I would give him a partial refund and had e-bay messages as proof of this. After I issue the refund, the buyer changes their mind and hits me with an "Item Not As Described" dispute so they can get a full refund. Even after providing PayPal with proof that the buyer had originally agreed to a partial refund they still decided in his favor for a full refund, and this was only because he could provide proof (delivery confirmation) that the item was sent back to me. What's to keep a buyer from pulling the same stunt but sending back an empty box or a completely different item!?! Is there any possible way a seller could have a safeguard against this?