I agree with the above post, what I've also heard from a couple of people in the know is that if you instruct in Korea, you can also get a side job as an English teacher either at the FBO, or at some nearby local academy. I've heard the total combined compensation can be as high as $35,000 to 55,000, which isn't bad a for a CFI gig. Keep in mind, you'll get paid around $27,000 if you're lucky, starting out in one of the part 141 FBO's in the states, which is what I'm getting paid, hence my desire to also go overseas looking for CFI jobs.