I'm new here but have used PRICELINE quite a bit. Not that it matters but I've always had good luck using 9's. For instance I wanted 4* in USE and saw some wins there. I was willing to pay over the last win for at least one of my days, but that ($105) was a very good rate So I went down 10% and rounded down to the 9 - $89 (79, 99, 109,...) and got it. My next price would have been 109 to top the last win that I saw for that date. I don't know why but 9's have good luck. Also don't start too low for 4*, depending on the city but especially San Fran, $80 is dirt cheap. Even if some one got that price I would be willing to pay at least $100, so my first bid will likely be $89. If i go to 3* I lower the price $79 or $69 in the city but even lower at the airports cause they almost always have a room. My biggest success though is researching prices and/or wins, and then not being greedy. Paying $10 more than the last person, will win more often than trying to get the exact same price. The hotels aren't stupid, they follow these sites too, and one low price will bring bidders and actually increase overall bids in their area - a legal bait and switch. Don't be afraid to ramp it up. $89-109-129?? all great prices in san fran for 4*. Another strategy if there are few hotels in a certain category is to make a fair bid for 4* then add 3* but lower the price a little. I seem to have luck with this, but again probably more related to putting in fair bids that are likely to be taken serious.