Booking Hotels with Priceline

When I wanted to go on vacation with my family I made the mistake of going to Priceline.comto book a hotel. When you first enter the home page you see many signs saying how you can save 15% or more just by using there website. So I found a nice hotel and booked it (which it did not say how much you could save on it till you booked it) I had to purchase something else to save money!!! So i called them up and someone told me that all there hotels were discounted at least 40%, so i called the hotel and the hotel's room rate was exactly the same as Priceline's. I feel that i have been lied to and cheated, I hope that you will never use Pricline, I won't!!!!