Where to Hong Kong prepaid SIM in Vancouver, Canada?
 

I'm about to head to Hong Kong in a few weeks, and am currently located in Vancouver, Canada. Anybody know the best place to get pre-paid hong kong sim cards for cellphones in advance? I have an unlocked gsm phone that i'd like to take on an upcoming trip, and saw a craigslist ad for a place in Richmond. Any other suggestions closer to Vancouver/Bby area? I'm hoping for somewhere in Crystal Mall.

Thanks, all.