If you're willing to travel over 2000 miles to go to Mexico (2090 miles from Chicago per google earth), you also might want to consider Dr. Tersigni at Bay Bariatrics in Coos Bay, Oregon (2341 miles from Chicago). Bay Bariatrics is a certified Center of Excellence and Dr. Tersgnin recently lowered his self pay price, in the surgery center, to $10,000.

Bay Bariatrics - Steve Tersigni, MD - Coos Bay, Oregon

I wish you success in your search.