I thought about doing my surgery in Mexico, however, I did not because of the follow-up and aftercare that are required with the band. In my area, I could not find a doctor that was willing to do the fills if they had not done the surgery. Also, my other concern was if there were problems with the band, who would I go to immediately. I posed this question to the doctors in my area and the answer was either no or it was going to be very expensive. This may not be true in everyones case, but this is what is available in my area.
While it may be cheaper upfront, the after care and the maintenance made the decision for me. But like the others on this post, do your research and do what is best for you.