It is very expensive. I'm not sure if they will honor your 4yr/50k warranty. Its only 2yrs in Korea. In fact, I'm almost positive but PM RayC. He has an M3 in Korea. If you want carry out parts, you will have to order them. Unless it has changed, the dealer doesn't sell parts over the counter.
So yeah, its a PIA to have a BMW in Korea and something go wrong with it. Try waiting 2 weeks for ONE pressure plate bolt.
2015 F34 328iX GT Glacier Silver
2011 E90 M3 Monte Carlo Blue
2004 E46 M3 Imola Red