Priceline and Hotwire are slightly different. With HOTWIRE, if you "bid", you will definitely get the hotel for the price stated ... plus taxes and fees. After deciding which hotel you want, you click on the "Continue" button. That takes you to the next screen. On the left side, you are shown the amounts (rate per night, number of nights, number of rooms, subtotal, taxes/fees and a grand total). You can continue from there to enter your payment information and you'll have your room(s). There is no separate fee to "bid" because HOTWIRE doesn't use that business model. You are always successful at "winning" a hotel. With PRICELINE, you select a zone and star level and then enter your bid. The next screen shows you information similar to Hotwire. If you choose to continue, you would enter your payment information (if you have not already saved it with Priceline). The next step is the major difference between PRICELINE and HOTWIRE. Priceline searches for a hotel in the zone(s) you selected at the price you want. If it finds one, you have just reserved and paid for your room(s). There is also no separate fee to bid on PRICELINE. If your bid is successful, some part of the fees that were previously shown to you go to Priceline (I believe it's around $7). If your bid is not successful, you are not charged at all.