Steve; I'm not familiar with the status (closed or open) of the Rio chip pictured in this person's ebay auction ... but $5 "casino chips" often go for way below face value ... so below $50 for ten of them might not be a big a bargain as one is led to believe.

I have dozens of real $5 obsolete casino chips with Coin Inlay Centers from Puerto Rico for sale at $2.50-$3 each.