Apgu/Cheongdam is where the real money is at (teaching Korean-American kids AP subjects). Daechi is good for decent pay, but you'll struggle to get more than 70 an hour there.
Yeah, another guy (Korean-American U Maryland CP) and myself were the only two people I knew of that went to 2 tier schools and were still able--barely--to keep up with the Ivy League guys*
I got into the game late in my stay in Seoul. I wish I had started much earlier.
Rural areas...yeah, you'll...