I've heard of this. I would rather do the way around (teach Spanish to English speakers), so I plan on becoming fluent in Spanish (hopefully!). Come to think of it, once you're 3 or 4 years into your learning, you could probably take a similar course. You would have enough understanding of the language to do it by then

1700 to $2500 a month depending on program and experience in South Korea. Some programs reimburse you for your plane ticket as well. Ive heard that the schools actually give you a place to live (though once you stop working at that school you have to move out immediately). Its usually a small apartment, nothing fancy but its definitely a plus when you are moving to a new country. There are numerous videos on youtube about teaching in korea and the benefits and drawbacks.

Argentina is really nice, i also wanted to teach english in Uruguay