Asian Market in Powell, OH (Columbus)
Try going to Columbus Asian Market at Bethel and 315. It's in the Microcenter Plaza. If you're looking strictly for Korean food, there's another korean market down the street on Bethel called Toul-Bo, maybe a block or two down. You can also try Lotte Market on High St (north of Henderson, next to Tee-Jaye's) for more Korean foodstuffs.