Does the cost of jaw contouring vary significantly depending on the consultation?

I am looking into the cost of jaw contouring, and I think there will be significant differences depending on the hospital.

If I have jaw surgery and contouring done together, do the examination fees or the scope of the surgery change?

Do they usually explain the jaw contouring costs item by item in detail during a consultation?

I don't think I should make a decision based solely on cost, so I am wondering what other factors I should consider.