What is the most important criterion when comparing clinics for Ultherapy treatment?

When I search for Ulthera, there are so many clinics and the prices vary so much that I don't know where to start comparing.

It is a procedure that is too burdensome to choose based solely on price, and
It is difficult to judge the medical team's experience or treatment plan based solely on reviews.

For those of you who actually received consultations from multiple places, what criteria did you use to make your final decision? I am curious about the specific points you made sure to check besides the price.