|University of Vienna¹|
Photo by http2007
All you need to do is research the schools you want, pick one, apply there as a transfer student and, if accepted, apply for a student visa from the country in question. I would also strongly recommend you consider schools in less exotic locations. If they have cheap or free tuition for foreign students combined with a low cost of living, why the heck not? And if your student visa allows part-time work, then yes, it's easy to see why it would be less expensive than a degree back in the US.
1. Note that the University of Vienna does not participate in the US Federal Financial aid system, however, non-EU students only have to pay €416 a semester.