Give PayPal a call, explain it was virtual goods trade. But he no doubt filed with his credit card company and you have no proof like gold selling sites do with phone confirmation and IP checks so it's pretty much fingers crossed for you. It's only 30 bucks so not a huge hit.
I actually got pretty good proof. His IP will probably check out because he donated to sythe quite abit and did heaps of transactions while he was still legit so I think hes a rookie scammer. His paypal and email all match the one on his sythe profile and also match the chargeback he filed against Zippy which got approved by a moderator and screenshots of everything of his vouches etc etc are all linked. Just hope its enough.