you arec referring to, I'll bet each one has a poker room. It is customary to buy chips by the rack-full in the poker room. If a rack or more does not make it from the cage to the poker table or vice versa, it would come as no surprise that they would end up on eBay. Generally speaking, a rack of $1 chips (100 count) will go for $120 - $140, depending on who is paying for shipping.

Jim