Priceline can offer you really good rate in major cities across the USA. They can help you find best value airline tickets, hotels and car rentals.
How to know what to bid and what strategy to use to find the best rate ?
There is a website – www.biddingfortravel.com .
BiddingForTravel.com's primary goal is to promote informed bidding when using priceline.com's travel products.
Here you will find a forum by city on strategies used by other travelers to find the best price. You can search each states or cities forum for hotels and get listings of the hotels used by priceline, star rating and what each hotel has been priced at.
This cities and states mentioned below can be found on this website:

• Arizona - Phoenix/Scottsdale and all other cities
• California - Disneyland/Orange County, Los Angeles Suburbs and Surrounding Area, Napa Valley/Sonoma Valley, Palm Springs/Palm Desert, Sacramento, San Diego, San Francisco, San Jose/Silicon Valley, Oakland/East Bay/Marin County, Pacific Coast
• Colorado - Denver/Boulder and all other cities
• Connecticut
• Florida - Fort Lauderdale, Miami, Key West/Key Largo, Orlando/Walt Disney World, Tampa/Clearwater/St. Petersburg, South/Central Beaches, Panhandle/North Florida
• Georgia – Atlanta and all other cities
• Hawaii - Kauai/Big Island/Molokai, Maui, Oahu
• Illinois – Chicago and all other cities
• Indiana

• Iowa/Nebraska
• Kansas/Oklahoma
• Kentucky
• Louisiana - New Orleans and all other cities
• Maine/New Hampshire/Vermont
• Maryland (except DC Suburbs)
• Massachusetts – Boston, Boston Suburbs and all other cities
• Michigan - Metro Detroit (Tri-county Area)
• Minnesota - Minneapolis/St. Paul Area and all other cities
• Missouri - Kansas City, St. Louis and all other cities
• Nevada - Las Vegas, Reno and all other cities
• New Jersey
• New Mexico
• New York State - Buffalo/Niagara Falls (including Niagara Falls, Ontario, Canada), New York City, New York Airports (JFK/LGA/EWR including adjacent bidding zones) and all other cities

• North Carolina
• Ohio – Cincinnati, Cleveland, Columbus and all other cities
• Oregon – Portland and all other cities
• Pennsylvania – Philadelphia, Pittsburgh and all other cities/Delaware
• South Carolina
• Tennessee – Memphis, Nashville and all other cities
• Texas – Austin, Dallas, Houston/Galveston, San Antonio and all other cities

• Utah
• Virginia/West Virginia (except for D.C. suburbs)
• Washington DC Area, Washington DC Suburbs (in Virginia and Maryland)
• Washington State - Seattle and all other cities except Seattle
• Wisconsin
• Wyoming/Idaho/Montana/Dakotas
You can also find a lot of information about Canada, Caribbean/Mexico, Europe and Asia/South Pacific Hotels. It’s not fail safe, but works really well.

Remember that there are rules and restrictions pertaining to a winning bid and you should be aware of them.