Consumer Reports has helpful information on online shopping vs. in store shopping.

http://www.consumerreports.org/cro/magazine-archive/2010/december/electronics/best-electronics/shopping/index.htm

Top Shopping Categories ... Get a great price on a new car with the Consumer Reports New Car Price Report.

http://www.consumerreports.org/cro/index.htm

To help you decide, the Consumer Reports ... Shopping • Want to see your products in Yahoo! Shopping? Build your own online store or Advertise with us.

http://shopping.yahoo.com/articles/yshoppingarticles/807/consumer-reports-survey-costco-tops-list-of-major-retail-chain-stores