There is none,they only care about fees,Paypal is wholly owned by EBAY,you have more chance of finding Shergar riding Lord Lucan than you have getting protection.
In my case the Buyer left Feedback saying he received the goods,then a month later claimed they never turned up,Paypal agreed it was no fault of mine but they refunded him the £140 out of my paypal,because his credit card made a cash back claim on his behalf for NON RECEIPT of the goods he had already admitted receiving ????.
Papal said they were sorry for the outcome but "THEY COULD NOT BE THE ONES OUT OF POCKET"
Now the are forcing buyers and sellers in some catagories to use Paypal only,you couldent make it up,but it is true.