Priceline is one of the biggest booking systems not only in USA, but also in other parts of the world. Priceline has been existing since 1998 and has many subsidiary companies via which you can find and book hotels, air tickets and rent cars in all the world.
The company is aimed firstly at American trip market and very often offers hotel rooms by very advantageous prices.

There is an auction system on site in addition to traditional booking system. Press “Name your own price”, choose the desired area, car rent rating and specify your price for a hotel room (the Priceline.com base numbers more than 40.000 hotels around the world). If the site agrees with your price, you become an owner of the best price hotel room, if not, you can raise the price a bit and pay for your stay using Visa, MasterCard or American Express. You can also rent a car, buy an air ticket or make a tour.

What to do if you want to change or cancel your booking? In case, you book a hotel, get an air ticket or rent a car by auction price, any changes or booking cancellation is impossible. In other cases change or reimbursement of booking or an air ticket is realized according to the company policy where you buy services.