I recently talked to a vet who went to Universidad autonomous in Mexico, its fully accredited and tuition is donation based. She told me that the minimum donation was 25 cents a semester!!!! I don't know if I would be willing to go that far but it would mean no debt.
I could've sworn that I read somewhere that the total tuition for the entire duration of UNAM's veterinary course was closer to $1000, but I could be wrong. Still an absolute steal compared to US schools, at any rate.
I'd imagine that UNAM is easily the AVMA-accredited institution with the fewest amount of applications from Americans. You have to keep in mind that there is a major language barrier there. I actually considered applying to UNAM several times this cycle, but ultimately decided against it. I've studied Spanish for almost ten consecutive years. I've been abroad, both short- and long-term, to natively Spanish-speaking countries (Costa Rica, Mexico). Heck, I took a placement test before entering at a university that actually allowed me to
place into 400-level Spanish courses as a freshman (I don't recommend doing this, by the way... it did a number on my cum GPA and to this day I can't do a whole lot to fix it bar waste money and time to retake those classes). But I don't even think that I'm near proficient enough with the language to handle a tough, professional, medical curriculum down there. I still wonder if I could have even passed the entry exam, to be honest. I'd wager that very few US pre-vets would actually be able to stay afloat when not only do they have to deal with the massive amounts of information that is thrown at them at vet school but also have to learn it in an entirely different language. A lot of the terminology is fairly similar, yes, but it is just one more hurdle to deal with while you're already stressed up to your eyeballs.
Don't get me wrong, I think UNAM could be a decent money-saving option for those who are either very fluent in or native speakers of Spanish, but that doesn't apply to many pre-vets in the US, for sure. Many people seem to have a poor perception of Mexico itself, too (thanks, media!), but as someone who has been there herself, I can say it's a perfectly fine country once you acclimate to it. That's something you'll just have to deal with when you're moving abroad, regardless of where specifically that is.