Furniture can be very expensive but there are many ways to buy furniture on the cheap. A good place to find excellent furniture for unbelievable prices is a Hotel Liquidator. They carry beds, armories, sofas, chairs, art, mirrors, desks and more. They also carry mattresses but buying a used mattress from hotel has a little ich factor so you might want to skip that part.
You might also have to keep checking to find what you're looking for but you can't beat the prices. I took a little road trip to the hotel liquidator in my area and I found the following deals below.
With some reupholstering and cleaning these prices are a bargain.