As far as anyone can tell, what you see here is a real white iPhone 4 for Apple internal use only being sold in China for about $899. According to GizChina you can buy these in the Shenzhen markets and they apparently fell off a truck on the way out of Foxconn.
Prices start from around 5500 Yuan ($828) and rising to nearly 8000 Yuan ($1204) for the base model 16Gb version and even higher for the 32Gb and 64Gb models.
These prices are well above above the official retail price of the regular black iPhone 4 in China and seem even steeper when you factor in they are running iOS 4.1 which is locked to AT&T
You can pick one up at Taobao but be warned: this may be a fake.