Most South Korean readers will find the most success with Coinbase. A hardware wallet will store your private keys offline, thereby providing protection against any hacks or data breaches. However, international remittances need to be enabled for the bank account and users should also note that it will take around two to three days for the verification process to be complete. Mycelium charges absolutely no fees. The most attractive part about Gemini is that it charges a really low fee of 0. Please visit Luno for its exact pricing terms.