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Wal-Mart's Benefits

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This new NBER paper [2], by Jerry Hausman and Ephriam Leibtag, finds that big-box retailers such as Wal-Mart bring enormous benefits to consumers — and especially to low-income consumers.  Here’s [3] the abstract:

Consumers often benefit from increased competition in differentiated product settings. In this paper we consider consumer benefits from increased competition in a differentiated product setting: the spread of non-traditional retail outlets. In this paper we estimate consumer benefits from supercenter entry and expansion into markets for food. We estimate a discrete choice model for household shopping choice of supercenters and traditional outlets for food. We have panel data for households so we can follow their shopping patterns over time and allow for a fixed effect in their shopping behavior. We find the benefits to be substantial, both in terms of food expenditure and in terms of overall consumer expenditure. Low income households benefit the most.

Who’d a’thunk it?

(Hat tip to Karol.)