i checked him out on e-bay. his name is flowerhornfood on ebay. he has 100% positive feedback with quite a few sales. but what is a "powerseller" on ebay? that is what he is listed as.
I would contact him personally and tell him you want to go through ebay for security purposes that way he can't just take your money via paypal. Sounds legit though, let us know how it goes.