Man, I tried to use eBay some years ago to sell one of those shitty netbooks that were getting really popular back then.  I shipped it out and the buyer marked it as broken and included a picture of another netbook that was clearly not mine.  I showed proof to eBay but they still sided with the guy who scammed me.  I really hate eBay and Paypal ever since.  Having a firm stance that you'll always side with the buyer is such a load of crap because it only encourages scammers to appear as victimized buyers.