It depends on many different factors.

1. Area of the country
2. What hair removal laser the center uses
3. If your going to chain laser hair removal center or sole prop owner.
4. How big of area your doing
5. How many treatments you want
6. How dark your hair is
7. What skin type you are (Fitzpatrick scale)
8. How coarse and dense your body hair is

Do tons of research online and get at least 2-3 free consults with different place. Just stay away from the chain centers, there people are usually only trained for 2-3 days!