Self-prescribing antibiotics is not great for antibiotic resistance - Al Jazeera has done some great reporting on how Indian pharmacies loose prescription checks or doctors overambitious antibiotic prescriptions have caused a rise in antibiotic resistant superbugs (https://www.aljazeera.com/program/101-east/2016/8/9/the-rise...) - sure they're easy to get, but there's been a tremendous health cost in India because of that
But not only "suckers and rich people" pay American rates - the people who were born here without foreign ties do it all the time!
And finally, India just recently opened for tourism, plus they're not doing visa on arrivals yet, how can people get a payday loan, passport, visa via embassy, and a whole trip in so casually?
Edit: can't you just do everything you mentioned above in Mexico anyways?