I have tried AmeriSmooth which is done through American Laser Centers which uses a combination of deep massage with rollers and suction, infrared and radio energies to treat cellulite. Treatments range from 10 - 15 to get the results you are looking for and then you have to maintain from there. They seem to have a large client base that do this and I believe it is very simalar to what you are looking at.
They must have licensed estheticians perform the treatment and research shows it works 70% of the time. So, for the expense of buying the machine and adding staff unless you can do it yourself it would be a pretty big investment. Other downside I see is that if people don't like the results then what? You know we are all harder on body's than others are and we normally don't see improvements like others because of that. I would worry about people wanting their money back, etc. Another factor is even if you are doing the treatments the customer has to do their part with drinking a lot of water, excerising and eating right other wise it's not going to work and you can't control what they do after you perform the treatment.
you can also check out this link which give the pros and cons of the Endermologie -
http://www.yestheyrefake.net/celluli...nt_removal.htm