I used Priceline to get a discounted hotel room in Hastings, Nebraska for 1 night. I did Hotel Express where you don't know the hotel, but the fine print said the category included Best Western and La Quinta. They gave me one night at Super 8 Motel and the price was $1.00 more than what Super 8 would have charged, had I walked in off the street.
Priceline said that they based their price off the Super 8 website listing which was $9.00 more. I told them that I didn't think that was much of a discount...roughly 8%. In the end, they gave me a coupon for $25.00 off my next Priceline purchase. It apparently comes with lots of restrictions and is good for 3 months.
If you use Priceline, please double check what the hotel will do for you. You might be better off talking to them directly. Priceline's deep discounts seem to be a bit random. Buyer Beware.
Oh and the customer service rep was very nice, but I was on the line for 30 minutes.