No necessarily. They look at how long you will need them on and the severity of the case. I went to a private orthodontist and I was being charged almost 5000! and thats WITH my crappy insurance. Of course I didn't go along with my procedure, but I am going to a dentistry university/medical center to get mine done. Dentistry schools are always looking for patients to work on and it is priced about 50% lower plus w/e insurance you have to cover it. They do VERY good work. Just research some schools, you might come across some good things.
I just got my wisdom teeth taken out and paid $350 and it would have been $1500 anywhere else!