Wal-Mart

In 2010, American consumers bought almost as much merchandise at low-priced Walmart ($307.7 billion in U.S. retail sales) as they purchased from the next five largest U.S. retailers combined ($324.5 billion): Kroger ($78.3 billion), Target ($65.8 billion), Walgreen ($61.2 billion), Home Depot ($60.1 billion) and Costco ($58.9 billion).

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