I have had a similar thing happen to me where the buyer cliamed he hadn't recived an item (and made a cliam to paypal)  even though I tracked it and I know it got to his address.  All paypal did (after returning his money to him)  was to send him a courtesy email to say please pay the seller.  This never happenned and the buyer wont answer emails. So he has the item and I dont have the money for the item.  I don't think paypal or Ebay have helped with this at all. So I really do not think seller protection works. There also appears to be no way to name and shame a buyer who is obviously scamming things for free.