Just wanted to share my experience in Hong Kong last month.
This is in TUNG CHOI Street in Kowloon, HK also called "Goldfish" or "Aquarium" market. You'll find all US brand (Kent, Aquarium Systems, redsea, aquarium pharmaceuticals etc) marine aquarium accessories, filters, sumps, tanks, salt mixes, additives, lighting at rock bottom prices (some even lower than in the US ) Acrylic and seamless glasstank prices are ridiculously low and competition among stores are very stiff that's why grabe ang tawadan at baratan .. he he he w/c is good for buyers
Fishes, corals, invertebrates, live rock etc also abound from Fiji, Indonesia, Hawaii and US and Philippines??
Here are some photos: