As we learned in our price-comparison test, this site is hands-down the easiest to use and nets you the best deals. No one site always turns up the best prices. To easily access Google’s or Bing’s price-comparison sites, go to the main search engine page and click on the “shopping” tab.
pocket source: http://www.consumerreports.org/cro/2010/10/start-your-engines/index.htm