I tried the 7000$ one with a joystick, it was great, however, after i questioned the sales guy over the tech specs and value, for money, I decided, even though it was a great massage, it was a very expensive one, because the parts do not last, the machine lifespan is only 5 years.
Although if you rent it out, you may make some money, however, you need to know how many massages it can do, before it starts needing new parts, and to be honest, its far to costly to have it repaired, for that kind of money, i need some guarantees, they couldn't provide.
But a good machine, I would buy one second hand at the right price, however not seen any! I'm sure there are many that are not used often, and will eventually end on the market..at half the price.