I normally order my HK dvd's from DDDHouse (whose website seems to be "repaired" and back up to speed) or assorted eBay sellers (if DDD doesn't have stock) but I recently had a look at the HMV Hong Kong website.
They ship internationally and have some good bargains from time to time but it's uncertain that they are customs friendly.
Here's a pic of their instore 2014? New Year sale,nice prices.
