What I don't think many patients understand when they are contemplating going to another country for plastic surgery is how incredibly high our standards for surgical safety are in the United States (assuming you deal with a surgeon certified by The American Board of Plastic Surgery).
These very high standards for sterility, anesthesia safety, instrumentation, and training of staff CANNOT be taken for granted in other countries.
I can promise you that the many patients I see with devastating problems after having surgery abroad would say that at the time they made the decision, they thought they were making a good decision.
I can also promise you, however, that EVERY ONE of these women (and I see at least one a month) would tell you that they would LOVE to have that decision back- and that the money they saved was subsequently spent several times over in the management of their problems.
Are you really willing to risk your safety, and indeed your life to save a few dollars? Really??
As for your suggestion that your surgical outcome in Argentina is likely to be better because Argentine women are more appearance conscious and interested in plastic surgery, I would say you are getting your information from poor sources.
Finally, please understand that should you decide to proceed with this plan, when you finally do return to the US, you will likely have a hard time finding a surgeon to see you if you do have a problem- most reputable surgeons would NOT want to get involved with a problem created abroad after you passed them by for your surgery in the first place.