The site is free for standard members, you can create your own profile and browse profiles, I personally prefer Korean Cupid as it allows you to see all the profile details without having to upgrade unlike other friend finder site.
With free member, you can only talk with women who are paid members.
Without more ado, here is a list of several popular Korean online dating websites with detailed reviews.
Korean Cupid is a well-known website for foreigners to date Korean singles.
If you want to contact all members, you need to upgrade to its Gold and Platinum paying members.