Are these supplied with receipts? How can you assure us they are not carded or illegally obtained in some way?
I don't think he can/he will. I don't see how/why he would sell them for 90% off if they were legit.
If they were actually legit i'd know tons of ways to get a higher return yield than just 10%. There's no way this dude doesn't.
So, he's probably selling carded cards. I don't know about Divanoff, but it looks like it's a sockpuppet from OP.
https://bitcointalk.org/index.php?action=profile;u=2496350;sa=showPostsAKA: STAY AWAY FROM THIS GUY.
Woops, I read that as 90% of the value, and hence 10% discount.
There's no chance in hell he's selling legit cards at that price.