Here's a quote from his Borgata $20 house chip auction: "These are much more scarce than the regualr house chips."

Sure they are... you have to go over to the asian area and wade through the tables and hoardes of people and then try to convince the dealer that its not a scam and you really do want to buy a chip from her. then she calls over the floorperson who you then have to convince its not a scam and you really do want to buy a chip from her.