135 $ a session sounds reasonable. To give you an idea, I paid 2600 $ for 7 sessions, and it was 40 % off. Don't trust the big chains with the pretty waiting room and TV ads. I later found out a new small clinic had opened up right next to where I live. 35 $ per 15 minutes, with the same LightSheer machine, each session usually being about 45 minutes or less. If/when I want to get some body hair removal done, I'm shooting for this place.
Anyway, the price you've said is fine. There's cheaper, but there's much more expensive, too.