Harrah's has raised the price for their 24 hour all day buffet deal. As of today the price is $34.99 for Total Rewards members (and their companions under 21), and $39.99 for non-members. The old price was a flat $29.99.
UPDATE: As of March 3, 2011 the price has risen again to $44.99 for Total Rewards members, and $49.99 for non-members. Please check directly with Caesars Entertainment for current pricing.
Harrah's reason for raising the price:
During our initial test period, the response from our guests was overwhelming. The Buffet of Buffets proved so popular that it made it challenging to maintain reasonable wait times. In order to ensure that our guests receive the level of service they expect and deserve, we adjusted the price to better manage the demand for the Buffet of Buffets pass.
Even with the new price it still seems like a decent deal. If you are someone who can carefully plan your time in Vegas (not always easy) you could definitely get your money's worth and theoretically even get four meals in (not saying it would be a good idea).
If this deal really is this popular I wonder how long it will be until we see a similar offering from the MGM, Boyd, or Stations properties?