I don't know. I have never been to one, but I have a menu for a local one....
For $40 I can have this:
Anti Stress Full Body Treatment
The entire body is massaged with a special anti stress massage oil and then wrapped in aromatic Moor Mud. This healing mud not helps not only skin conditions but also arthritis, rheumatism, muscle soreness, and sports injuries. (55 minutes)
Quite frankly, I really, really, really like the idea of people attending to my bod. It's non-sexual, but dang it is sensual.
Somebody sign me up!