I just returned from 8 days in China starting in Beijing and ending in HK with stops in Shenzhen and Guangzhou. I hit several night markets in country and an electronics mall while in HK. Only saw knock off Ipads in country, poorly done at that. Plenty of accessories in the night markets from cases to charge docks in apple packaging.

Ipads galore in HK but appear to be 20-30% higher than in the states.
>16G WiFi models for $5250HK or $680USD.
>The $29.99 apple case was $385HK or $50USD (same for the projector cable)