Let me post a site to check the current price for Korean exchanges exclusively.
Bitscape.me is like a simple version of CMC or Cryptowatch for Korean crypto exchanges.
The point is that it also shows current prices of some Korean exchanges that they don't provide any official APIs. It's the only website.
It's written in Korean, but the crypto symbols and numbers are written in English, so it wouldn't be hard to interpret it.
https://bitscape.me/