I think that what he does is wait for the money to get 100% transferred to his bank account and then sends the cards. He did this with me anyway, as he said that he never used PayPal before and wanted to make sure that I don't retreive the money somehow after he sent the card by mail, so he basically wanted to actually SEE the money in his bank account before sending anything out. Fishy, fishy, fishy...but we'll see.
My estimate is that he is only about now probably sending out cards to buyers, that is if he's legit.