If you haven't bought a pad yet, the Toys R' Us near the old Fresh Pond Cinema is going out of business. They have two versions ($20 & $40, original price) available at 50% off. So if you are just wanting to get started, you might try those. The $40 one has a one inch foam insert, so you aren't dancing on the floor--it is also less easy to store, but can be taken apart.