Why do prices vary depending on the plastic surgery clinic and doctor?

I am a person who is seriously concerned about surgery related to fat relocation under the eyes and eye shape correction. I
 searched for hospitals through blogs and mass media, and went to three hospitals that were mentioned in reviews and frequently for consultations. However, depending on the hospital and the director, I went to the same hospital (same hospital). I really don't know why there is such a big difference in price ( including several directors)
 . So it's even more confusing.
The cheaper ones range from 70 to as much as 300 (under the eyes only). Why is this? I think there is a difference in price depending on the surgical method, but there seems to be no standard, so I can't go to a cheap place because I'm afraid of recurrence and the doctor won't care. I'm trying to go to a place that's too expensive and I'm
 confused about whether the surgery is really worth it or whether they're good at it. I like it.
 Please tell me, senior plastic surgeons, why the price difference is so big^^