25 Things That Could Only Happen at Walmart

The central goal of Wal-Mart is to keep retail prices low -- and the company has been very successful at this. Experts estimate that Wal-Mart saves shoppers at least 15 percent on a typical cart of groceries. Everything -- including the technology and corporate culture -- feeds into that ultimate goal of delivering the lowest prices possible. Wal-Mart also pushes its suppliers, some say relentlessly, to cut prices. In "The Wal-Mart Effect," author Charles Fishman discusses how the price of a four-pack of GE light bulbs decreased from $2.19 to 88 cents during a five-year period.