Ok, now that the cat is out, it is the Gathering Ground.
These guys are a huge dealer, and do not care if the cards are separated by set. They don't need to be sorted by number. They just need to be sorted by the selection (Rare, Promo, Holo, Common/UC, Reverse Holo and the like).
They will buy all promos too, and treat those as a separate issue. Common POP cards are still commons, but the other promos, they know what they were doing.
They generally use the "stack sytem" to determine 100s, but trust their sellers. After a few thousand you can tell the difference between a 95 card stack and a 100 card stack.
These guys are serious and are ready to go. They will have CASH ON HAND. No giving them your stuff and then waiting. No dealing with the mail, and no having your cards rejected.
I am getting together another 10000 cards this weekend to hand to them to help with my gas expenses!
Vince