You can only buy the $15 for $10 only once. But your cabinmate can also buy $15 for $10. You use them on the gaming tables: craps, blackjack, etc. They disappear as fast as the real chips do.
We always buy them. I give mine to hubby, he gives me money for the slots. Guess who makes out best? Will power is his middle name, mine is Sucker! NMNita