There's a big Korean shopping center here - they even have a post office in it. Greenland is the flagship store. It's a large one and has a huge variety of Korean foods, including some I haven't seen elsewhere. Prices do seem to be a bit on the high side; both compared to Korean places in California and Oregon, and, for produce, compared to SF Market down the street a ways. Still, its the place to shop in Las Vegas if you want to get Korean groceries.
There's a food court out in front of the supermarket. I suspect i could have me a tasty lunch there. In the supermarket they have lots of types of banchan, a table of varieties of tteok. I wish they had Greenland where I live.