Paypal should get your money back to you, IF this guy has left anything in his Paypal account (bank account and/or credit card). They are pretty good about this - have saved my bacon before!
Hope they can help you out.
I'm still trying to find a cheap C-128 to replace the setup my ex-landlord stole from my while I was moving. I guess we can get it from any/all sides these days! At least I saved the Amigas!!