Home Budget is a nice place to get cheap mattresses. They offer a variety of sizes and brands which include Serta, Sealy, Sterns and Foster. They also have the mattresses in stock so if you're able to pick them up you won't have to pay a delivery charge. The salesmen are very knowledge and encourage shoppers to lie down on the mattresses and test them out. They know the products well and will answer any questions you might have. If you're looking for a cheap mattress try here.