They resell instantly so they have cash going in and out all the time and constantly have to restock to maintain a good profit. Also there's not just 1 bulk reseller on the planet, there are hundreds of companies or solo people who do this. It's easy to get rid of 50b in a night or 100b in a day and not even for a terrible price. Oh, and I can't show off anything on these forums, it's against the rules. ^^