I feel for you man. Every time I go on ebay, someone seems to try and con me out of my money. Luckily I have managed to get my money back with the help of Paypal. It annoys the crap out of me how Ebay don't seem to want to do anything about this. Probably because at the end of the day Ebay is making money out of this. All I can say is make sure you only use normal Paypal payments, if they don't want you to then just leave them be.