I started with a BMI of 31 and lost 55 lbs. My surgeon is Dr Cirangle in San Francisco, CA. I self paid and the surgeon, hospital and anesthesia were $17,300. There were additional costs for lab, chest X-ray, EKG and Upper GI. Not all surgeons will operate on a low BMI, which is one reason I picked Dr Cirangle.
It took me about 9 months to get to my goal weight. Since then, I've gained about 7 lbs which I am working on losing (again). I feel so much better after losing my weight, lowered my BP and got off BP meds. No joint pains now.
I had my surgery at 57, so as a younger woman you might lose quicker than I did. I had been overweight all my life too and love being a thinner person. I would highly recommend this surgery to anyone.
Let me know if you have specific questions; I'd be happy to anyswer anything than I can.