There is a pretty good proper astro shop too in HK, that carries all the Tak line and then some.
Off the top of my head I can't remember the name... maybe try googling Hong Kong Takahashi - that might find it.
A friend bought one of the orange Tak astrographs there and hand carried it back through the airport in its box - no extra charges in anti-astronomy tax at all!
Regards,
Rob
PS. Not the one I was thinking of, but:
http://www.grandeye.com.hk/
This is the one I was trying to remember:
http://www.sdscience.com
And also try