There was a huge set of these available for a few weeks on ebay. I think it recently sold. You might want to contact the buyer. Here is the link...

http://cgi.ebay.com/500-PAULSON-FIESTA-CASINO-TOURNAMENT-POKER-CHIPS-NCV_W0QQitemZ220262849662QQihZ012QQcategoryZ150119QQssPageNameZWDVWQQrdZ1QQcmdZViewItem