An unusually long queue formed in the basement floor of The Hyundai Seoul in Yeouido last month. Shim Young-mi, 37, was one of the people who waited in line to try the New York-based Luke’s Lobster. She said she didn’t mind the long wait and the relatively high price for a palm-sized lobster roll that costs 21,500 won ($16.50). The price varies depending on how much lobster meat is in the roll -- a lobste...