The biggest Korean market at the moment until the new place on Spring Mt. and Rainbow opens up.  The selection isn't that great, but the food's fresh.  They can also help prepare food here for a price this includes large orders if you ever need to have lots of Korean food prepared for a party.  The prices are decent.  There are certain days you must go on if you want the newest already prepared side dishes since they are made on that day.  People are usually friendly.   The location as Brenna said is shady, but if you need a place to satisfy your Korean/Asian needs then this is probably the best place to go.