Are they there and hard to find?

Probably is hard to find.

I wouldn't recommend that you continue all of your illegal drug usage in Korea.
People in Korea don't turn a blind eye to this sort of thing. Caucasians also have a stigma of being drug users from all the foreign English teachers and US soldiers stationed so beware, the penalties are extreme.

Yeah? It's called Kimchi and Samgyepsar...With Soju