I want to put together a mixed Paulson casino set for a .25/.50 game. I can find the quarters, ones, and fives, but I'd like to have $20's in this set instead of $25's. And knowing the stakes I usually play, I wouldn't need more than a barrel or two. But I don't think I've ever seen any for sale. Are they out there at all (aside from paying $20/ea at a casino?)