After I reposted my auctions in Org yesterday, I decided to check out some old "new" content, do some soul searching in the game, attempt on queueing up for a few randoms in the process.
Now this has been a seller since back in the original WoW for me. Geenia will carry a limited either "green" or "red" Hanbok, and basically all these sell around the 20ish gold price. Yeah, that means don't buy the "royal", as you will be lucky to get your funds back (and for that matter, I won't buy the Dark Green either). For quick sales, you might go with the 10-15g means with the White Hanbok, but the limited red or green will be a more consitent sale, as it is a more "rare" item.
If you haven't already, go out and getcha Vanilla Cone, and enjoy the profits!