The Census defines e-commerce sales as goods and services where an order is placed by the buyer or price and terms of sale are negotiated over the Internet, extranet, Electronic Data Interchange network, e-mail, or other online system.   About 4 percent of all retail sales are completed online. In 2009, consumers purchased $143 billion in retail goods from businesses online.

According to the most recent Wal-Mart Annual Report, the U.S. sales for Wal-Mart (including Sam’s Club) for the 12 months ending January 31, 2010 totaled $258 billion.  Wal-Mart worldwide sales totaled $405 billion in FY 2010. According to the U.S. Census, retail e-commerce sales were $142.0 billion in 2009.

Statistics on Business-to-Consumer e-commerce sales for retail can be found at: http://www.census.gov/econ/estats/2008/2008reportfinal.pdf  Remeber that the data is in Billions of dollars!