I heard that they are expensive and most people pay for them through a payment plan that's high interest rates. Just what I heard though. We are slow getting stuff like that here. And most of the time you don't own them. Its weird stuff. I've done some work for a guy that installed them. I wasn't very interested in what he was saying about it. I think he said they do like a rent all store. You rent them kinda I guessMillerz