I am sorry, but you are wrong. It IS a hidden fee. This is a fact that is not debateable. Stating that properties "can" charge extra, but not listing which ones do or don't defeats the whole purpose of 'bidding" or "naming your price". Any information regarding resort fees and the like, incurred at a few specific properties are HIDDEN or not disclosed, which obviously makes bidding decisions and comparisons impossible. The bidders, in effect have no idea if they will be paying the specific amount they bid or not. I called priceline to complain about the Bello Vina resort in Napa. I bid $89. The bid was accepted, but I know from prior experience that this place charges a mandatory "resort fee" of $15. per night - over and above whatever rate was agreed upon with Priceline or Hotwire. Effectively changing my bid price of $89. to $106. This is wrong. Priceline told me any property has the right to charge up to $40. extra per night . Say Whaaa? Priceline should NOT acceot this practice from any of their participating hotels or resorts. Again, why bid if you really don't know for sure what you're going to pay???