Out of 513 million Chinese Internet users, about 194 million people (37%) had made an online purchase by the end of 2011 spending 782.6 billion Yuan (US$123 billion), which accounted for 4.32 percent of total retail sales.  China is expected to overtake the United States next year to become the largest online shopping market in the world. 

In certain categories, including clothing and consumer electronics online sales already exceed 10% of total retail sales.  Books, which were the first type of products sold online, account for more than 20% of total book sales.  Online sales are expected to triple to more than US$360 billion by 2015.

Source: China Daily