Its not cheap. The pricing I saw at the clinic I'll probably be using in Utah is about $150/month and you come in every 6 weeks for appointments. Ya that means you are paying for months you dont go in lol but the $150 is more of a payment plan than per visit thing. But still, $225 per visit 5-7 times to be baby bottom smooth, or close to it would be pretty reasonable IMO. I probably will spend that much on hair care shit and extra water costs (shaving in the shower) in the next 5 years.
As far as appointments being spaced out, I've seen a lot of sites saying this is why:
Hair follicles transition through active and dormant stages and only about 30-50% of your hair is actively growing at any given time. With each treatment, we will cover the entire skin surface, but only those follicles that are "active" will be impacted. When a follicle is dormant, the laser light cannot be absorbed, and the follicle is left undamaged. We customize your treatment plan to ensure that we are matching your hair growth cycles and ensuring the best results possible for you.
Copied and pasted that from the clinic's website where I'll be getting my treatment done. I have fair skin and dark hair which creates the most contrast, so I can expect a much more effective end result.