From what I have learned/heard about people trying to get things back, specifically thru paypal is that if its less then ... somethign like 15k they will basically tell you to go blow your hat.
Knew a fellow who bought a tractor off ebay, paid with paypal. He lives up here and drove down to the US to pick it up after the deal was done. It wasnt even the same bloody model! Paypal said too bad, 10k wasnt enough for them to get into it and he shoulda gone and looked at it first. He was fairly upset, we shall say.