I'm not sure if the clerk can see the amount but in my experience they know if it's a Hotwire or Priceline bid. Some people feel they get put into a "Priceline room". I'm more inclined to believe it's luck of the draw... last summer at a Hilton in Paris the room was fine but showing signs it needed updating. Someone who was there a week later and with a LOWER Priceline bid was in a room described as sparkling new. So go figure. Either way, when you're paying less than half price, it's hard to complain. Rob