Anyone have experience using Priceline for Shanghai? They do divide up the city -- I'm guessing most tourists would want "Huangpu," but perhaps some would also bid for Pudong. Seems risky to bid for less than 5-star -- which would cost you at least $55, since I've heard tthat's the (unwritten programmed) minimum priceline will take for 5-star hotels. The Westin Shanghai seems to participate in priceline (indeed, it MAY be the only 5-star in the Huangpu zone), but there aren't enough reported bids to know what they might take.