I can't seem to locate the auction that you speak of. Can you please link to it? Don't mistake the number of ebay listings as all unique chips, many of them went unsold and relisted.

These are the completed auctions that could find.....

This one ended for $125
http://www.ebay.com/itm/Caesars-Palace-1-Las-Vegas-4th-issue-Caesar-on-bed-Hot-chip-Great-deal-/200814815394?pt=LH_DefaultDomain_0&hash=item2ec17ee8a2

This one ended for $125
http://www.ebay.com/itm/Caesars-Palace-1-Las-Vegas-1960s-Caesar-on-Bed-casino-chip-/200803807170?pt=LH_DefaultDomain_0&hash=item2ec0d6efc2

This one ended for $116
http://www.ebay.com/itm/Caesars-Palace-1-Las-Vegas-Caesar-on-bed-4th-issue-Sharp-/200793183925?pt=LH_DefaultDomain_0&hash=item2ec034d6b5

This one ended for $300
http://www.ebay.com/itm/1-CAESARS-PALACE-CASINO-POKER-CHIP-/350580662650?pt=LH_DefaultDomain_0&hash=item51a03c617a