Sold 3 Hot Toys through eBay (~$800). Recorded the packing process, took timestamped pics before and after sealing the package, got a receipt showing its weight.
Buyer said I shipped and empty box, eBay decided to side with him and took the money back from my PP account.
Shipping insurance doesn't work because the package was delivered and the buyer didn't send me any picture of the supposed empty box so I have no proof that something happened to the shipment.
Never using eBay, PP or any form of payment including any kind of dispute service again.