Ha im in seoul now moving to thailand shortly. Will you be staying there long?
Pretty much all of the bottles in duty free thailand are the same as duty free seoul but they're substantially more than you would spend in the states. Some international versions, yes. Better, not really. But if you want some scotch with your cigars in thailand, then you might as well.
CCs are about three times the price of an internet value. In seoul near itaewon/noksapyung there is Burn in Hal, a cigar lounge run by Hal. Pricey on the sticks, but not too bad prices on a great scotch collection.
Have fun and if you need any further advice feel free to ask.