It is difficult to give you an exact quote. The cost varies between patients, as some may just need a couple of areas for liposuction and the fat transferred to the buttocks, some other patients may want or need more than a couple of areas of liposuction. You will need a consultation in person, to check if you are a good candidate for the procedure, also to discuss your goals, medical history to see if your health condition is ok for the procedure. Just be careful and consult with a Board Certified Plastic and Reconstructive Surgeon in Mexico, you can find them in the web site for the Mexican Board of Plastic and Reconstructive Surgery
I caution you against using price as the way of choosing your surgeon. Find an experienced board-certified plastic surgeon to perform your Brazilian butt lift. Keep in mind that it is a very time consuming and specialized procedure when done correctly. The least expensive surgery is one that is done correctly the first time. Going cheap on your first surgery may cost you more in the long run if you need a revision by an experienced board-certified plastic surgeon who specializes in gluteal augmentation. Look at your surgeon's before and after photos before you make decision. Some patients unfortunately resort to going to other countries because of the lure of cheap surgery. However, medical tourism is fraught with problems. What if you develop a complication? How are the emergency services in the area you would choose to go to? How will you see your doctor for post operative visits or see them for frequently if necessary? Consider using a line of credit and having the best and safest surgery possible. Carecredit and Alpheon offer financing for plastic surgery procedures. Surgery is a serious endeavor, go to the surgeon you feel is safe and can provide you the best results. Hope this helps and best wishes.