Arashi fan goods in Taiwan & Hong Kong?

[momo1124.livejournal.com]

Hi, I need some help here :) I am heading to Taiwan and Hong Kong for a long vacation in June/July so I am wondering if there's any major place/buildings that I can buy fan goods of Arashi (be it official or not). 

As for Hong Kong, I heard that there's a large building which sell all the Jpop/Kpop fan stuff. Does anyone have the specific address to that place? It's ok if you can give me the address to any other place in Hong Kong (preferrably in the city centre district)

For Taiwan (Taipei), I have absolutely no idea as to where there's fan stuff available for sale~ Can anyone give me addresses of some of the major CD shops as well? Thank you so much for your replies in advance!! :)