You are absolutely correct the hotel list here at Better Bidding should not be used to determine free rebid zones for the reasons you stated (new hotels not yet reported, changing star levels, etc). The way to determine free rebid zones is on Priceline's own website. When Priceline displays all the available bid zones for San Francisco (or any other city), you simply check the box beside each zone, separately, one at a time, in order to determine what star levels are offered in each zone. For instance, check the box in the first zone, Civic Center, and you'll see 4 and 3 1/2 stars are greyed out. This means that this zone does not offer any hotels above 3 stars, making it a "free" rebid zone when bidding 3 1/2 or 4 stars. Do this simple exercise for each zone and you'll be able to determine the 4 free rebid zones I mentioned in my earlier post. Once you've got the hang of this, you can use the free rebid strategy with assurance.