Comparison-Shopping in China

Here are a short list of shopbots in China:

Topgou.com:
Bjia.com
Tejiawang.com
3jpk.com
smarter.com.cn
...

To get some statistics about ecommerce in China:

China Internet Network Information Center
This is one of the earliest official organization systematically collecting data on ecommerce and other Internet information in China.

Chinese ecommerce association
This is the largest ecommerce organization consortium in China.