I had to google it, I knew there was massage in the name. The one I found is http://www.massageunit.com I would say it is the one that is 249.95, I thought I paid 225, but not sure.
I use it every day, of course it is a lazy way to exercise, you can just lay on your back on the floor with your eyes closed. I learned about it on MH forum, he uses one. Then I asked Andreas opinion and he has one. MH says buy the cheapest one they will break no matter what. Andreas in his last series of messages said to buy a good one and not a cheap imitation.
The most expensive one is the Sun Harmony for about 450. At that time I did not want to pay that not knowing if I was going to use it. I might the next time depending on my mood and financial situation, it is so easy to use and it helps for a lot of things and in my case I like to keep the spine flexible and like it that it moves the lymphfluids. Oxygenwise they say it is like walking for an hour or so, of course in this case it does not make your legs stronger. After 15 minutes it stops and while you lie still you get a tingling feeling coming up from your legs and it goes to your head and your fingertips.
They say you can loose weight, but I feel that is more to get people to buy it, I have not noticed it.
Do read the websites and see what they say about it.