Let it go on auction, won't likely reach that much... card looks legit, you're questioning if he actually owns it?
Paypal will have you covered man, so you'll either get a bargain, or get your money back
I can't see how he has 8300+ feedback on that sportsbuy site and only 4 on ebay. And the pic quality would indicate a "save as" image from that site and use on ebay.
yeah mate, it was instant messaging then i sent him the link to the other site asking him why he is asking $500usd on that site and asking for $120usd from me on ebay????? he didn't reply