Looking for small DVD stores

Not looking for stores like HK Records or HMV... I've been there and they don't have what I want.

What I need is small DVD stores that sell TV series from China, Korea, etc. They are usually around 25-100 HKD each.

The problem is that they are scattered about and you never know where unless you wander around and happen to come across them. Also, ones I knew about 3-4 years ago closed and I always have to seek new ones.

I read a lot of people talking about where to find DVDs like this but they are very outdated and the stores may not still be there anymore.

I have been to 3 such stores around the North Point and Fortress Hill area. But that's about it.
Where else should I look for stores? Or if you know of any that have been open in the past year please let me know.

Thank you very much.