Until recently, the best place (that I know of) was in DB and Mui Wo, but the owner has begun stockpiling ancient books, which he thinks are valuable. Who in HK wants a 15,000$ copy of T. H. Lawrence? I don't.
I want books that are worth reading and I want them cheap. (35$)
And students don't.
I'm talking about English books, classics, current, cutting edge, not collector garbage. Who cares if you have a the first edition of a piece of garbage riddled with errors?
Where to get? Page One and Dymocks are too flaky, too commercial. I'm interested in Science and History.