The Core

I feel stupid I didn't think this was done, but I didn't. 

Inside the shop, different credit cards sell for different prices — platinum cards are $35; corporate cards, $45. It's more expensive for cards with higher credit limits.

So you pick and choose a basket of numbers. Criminals usually buy these things in bulk, in case the credit cards get canceled. But a few of them should work.

http://www.npr.org/blogs/money/2011/06/17/137227559/how-to-buy-a-stolen-credit-card

I love the formality of the system.  Sounds nicely thought out to be honest.  Disappointed that the fraud community falls in the the same design cliches as the hack/warez brigade though. 

A similar site was recently taken down - being operated from quite close to me here.  Always had the hunch that I had spoken to the guy. 

I keep expecting an affiliate link.