"Average" price is probably around $13,000. I know a local (Lewiston ID) certified plastic surgeon that dues this for under $10,000. Then there are those surgeons in Miami & LA that charge well over $20,000.
According to where you are & how reputable the doctor is! In Southwest Alabama, average cost is $5000 to apx $7000. Just make sure the doctor has all of his certifications & license up to date & has a reputable business. ANY kind of surgery can be dangerous because of the risk of blood clots or fat embolism. Best wishes!