Keyboard shopping in Seoul?

[Khers]

My sister is traveling to S. Korea and Japan in a week or so and I'm naturally thinking of this as an opportunity to get myself a HHKB BT. Now, while Japan would probably be the best place to get hold of that board, Tokyo is currently not in her itinerary. Seoul, however, is. So, while I know where to go for some Topre in Tokyo, I know nothing about Seoul. Would any of you have some leads as to where to get a HHKB BT in Seoul?

On a related note, I think I've read somewhere that HHKBs and the like are more expensive in S. Korea than they are in Japan. Enough so that it would be better to persuade her to take a trip to Akihabara while in Japan?