I did find some HK websites for ordering diapers and formula in bulk, and they deliver, too. Unfortunately, they are all in Chinese. So you need someone who knows Chinese to do the ordering for you:
http://birth.hk/catalog/index.php http://www.bbboomhk.com/ http://www.etwhk.com/ http://www.bnm.com.hk/ http://www.megasavehk.com/baby/ http://www.re-on.com.hk/cat.php?mc=1&lang=us http://www.hkbabyzone.com/index.php?...info_type=home
I find these websites a little hard to navigate but I guess ordering online is still better than me having to go out to get the supplies (especially since we don't have a car)
Additionally, after I checked out all these websites, I realized that Japanese baby products are very popular here. Anybody knows why? I was planning to use Pampers when baby#1 pops out in Oct, but then I heard that the Pampers sold here are made in China and hence of a different grade then the ones sold in the US. Don't know if that's true, though.
Hope this helps!