I would think a Korean dating site would be in Korean, When I see this domain I'm thinking of some random sketchy link I'm getting send or a fishing email. I wouldn't value it anywhere above 200. That might just be me tho!
general rule if you are not sure what the domain can be used for then don't buy it ^^ i honestly don't see a use for it but a blog for housewives in korea even as a dating site there is plenty of other better options