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Relative Price Dispersion: Evidence and Theory

Author

Listed:
  • Greg Kaplan

    (Department of Economics, University of Chicago)

  • Guido Menzio

    (Departmemt of Economics, University of Pennsylvania)

  • Leena Rudanko

    (Federal Reserve Bank of Philadelphia)

  • Nicholas Trachter

    (Federal Reserve Bank of Richmond)

Abstract

We use a large dataset on retail pricing to document that a sizeable portion of the cross-sectional variation in the price at which the same good trades in the same period and in the same market is due to the fact that stores that are, on average, equally expensive set persistently different prices for the same good. We refer to this phenomenon as relative price dispersion. We argue that relative price dispersion stems from sellers’ attempts to discriminate between high-valuation buyers who need to make all of their purchases in the same store, and low-valuation buyers who are willing to purchase different items from different stores. We calibrate our theory and show that it is not only consistent with the extent and sources of dispersion in the price that different sellers charge for the same good, but also with the extent and sources of dispersion in the prices that different households pay for the same basket of goods, as well as with the relationship between prices paid and the number of stores visited by different households.

Suggested Citation

  • Greg Kaplan & Guido Menzio & Leena Rudanko & Nicholas Trachter, 2016. "Relative Price Dispersion: Evidence and Theory," PIER Working Paper Archive 16-001, Penn Institute for Economic Research, Department of Economics, University of Pennsylvania, revised 01 Jan 2016.
  • Handle: RePEc:pen:papers:16-001
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    More about this item

    Keywords

    Price Dispersion; Equilibrium Product Market Search;

    JEL classification:

    • L11 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Production, Pricing, and Market Structure; Size Distribution of Firms
    • D40 - Microeconomics - - Market Structure, Pricing, and Design - - - General
    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness
    • E31 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Price Level; Inflation; Deflation

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