Thank you for your question. Fat transfer is very reliable way of enhancing the contour of the buttocks. Costs will vary depending on each patient's desire and expectations with regard to their final result. This is all related to the amount of time that it would take in surgery. The final determination will depend on personal evaluation with each patient. I would invite you to contact the office at 866-646-6136 to schedule a consultation or more details can be provided. I hope this helps and have a wonderful day.