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The hazard function of sales: An analysis of UK supermarket food prices

  • Lan, Hao
  • Lloyd, Tim A.
  • Morgan, C. Wyn
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    In this paper we examine the empirical pattern of sales behaviour among the UK’s seven largest retail chains using a scanner dataset of weekly food prices on over 500 products over a 2.5 year period. Motivating the analysis is the question ’are products more likely to go on sale that longer they remain unpromoted?’. Theory is not unanimous and empirical and recent empirical studies also offer conflicting evidence. To address the question we estimate the hazard rate of a sale - probability that a product goes on sale in the tth week since the last sale - over the market as a whole and then separately across different national retailers. We pay particular attention to the effects of sales in like-for-like products in rival retailers on the hazard of a sale. We also find that accounting for multiple sales has a pivotal role in determining the slope of the hazard function, which actually reverses sign when proper account is taken of this seemingly innocuous technicality. Correcting for this we find that food products are more likely to be discounted the longer they remain without a sale. This result helps square the circle between price setting and modern theories of sales behaviour. Furthermore, we find that the positive time-dependent pattern varies across product format and brand status. With sales in rivals, branded products in a representative retailer are more likely to be discounted if it has been on sale previously in the rival retailers, however the hazard of a sale in private labels is unrelated to its rival sales. In the individual retailer level, the hazard results show that while most supermarkets exhibit some form of a ’hi-lo’ pricing there is one retail chain does not (showing no time-dependence) preferring an every day low pricing strategy (EDLP).

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    File URL: http://purl.umn.edu/151972
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    Paper provided by Agricultural Economics Society in its series 87th Annual Conference, April 8-10, 2013, Warwick University, Coventry, UK with number 151972.

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    Date of creation: Apr 2013
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    Handle: RePEc:ags:aesc13:151972
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    1. DeGraba, Patrick, 2006. "The loss leader is a turkey: Targeted discounts from multi-product competitors," International Journal of Industrial Organization, Elsevier, vol. 24(3), pages 613-628, May.
    2. Baumgartner, Josef & Glatzer, Ernst & Rumler, Fabio & Stiglbauer, Alfred, 2005. "How frequently do consumer prices change in Austria? Evidence from micro CPI data," Working Paper Series 0523, European Central Bank.
    3. Hosken Daniel & Reiffen David, 2007. "Pricing Behavior of Multiproduct Retailers," The B.E. Journal of Theoretical Economics, De Gruyter, vol. 7(1), pages 1-45, November.
    4. Taylor, John B, 1979. "Staggered Wage Setting in a Macro Model," American Economic Review, American Economic Association, vol. 69(2), pages 108-13, May.
    5. Guimarães, Bernardo & Sheedy, Kevin D., 2008. "Sales and Monetary Policy," CEPR Discussion Papers 6940, C.E.P.R. Discussion Papers.
    6. Peter J. Klenow & Benjamin A. Malin, 2010. "Microeconomic Evidence on Price-Setting," NBER Working Papers 15826, National Bureau of Economic Research, Inc.
    7. Timothy J. Richards, 2006. "Sales by multi-product retailers," Managerial and Decision Economics, John Wiley & Sons, Ltd., vol. 27(4), pages 261-277.
    8. Kiefer, Nicholas M, 1988. "Economic Duration Data and Hazard Functions," Journal of Economic Literature, American Economic Association, vol. 26(2), pages 646-79, June.
    9. Berck, Peter & Brown, Jennifer & Perloff, Jeffrey M & Villas-Boas, Sofia B., 2007. "Sales: Tests of Theories on Causality and Timing," Department of Agricultural & Resource Economics, UC Berkeley, Working Paper Series qt2g56n1jk, Department of Agricultural & Resource Economics, UC Berkeley.
    10. Álvarez, Luis J. & Burriel, Pablo & Hernando, Ignacio, 2005. "Do decreasing hazard functions for price changes make any sense?," Working Paper Series 0461, European Central Bank.
    11. Peter J. Klenow & Oleksiy Kryvtsov, 2008. "State-Dependent or Time-Dependent Pricing: Does It Matter for Recent U.S. Inflation?," The Quarterly Journal of Economics, MIT Press, vol. 123(3), pages 863-904, August.
    12. Fisher, Timothy C. G. & Konieczny, Jerzy D., 2000. "Synchronization of price changes by multiproduct firms: evidence from Canadian newspaper prices," Economics Letters, Elsevier, vol. 68(3), pages 271-277, September.
    13. Paul B. Ellickson & Sanjog Misra, 2008. "Supermarket Pricing Strategies," Marketing Science, INFORMS, vol. 27(5), pages 811-828, 09-10.
    14. Meyer, Bruce D, 1990. "Unemployment Insurance and Unemployment Spells," Econometrica, Econometric Society, vol. 58(4), pages 757-82, July.
    15. Paul W. Dobson & Eitan Gerstner, 2010. "For a Few Cents More: Why Supersize Unhealthy Food?," Marketing Science, INFORMS, vol. 29(4), pages 770-778, 07-08.
    16. Loy, Jens-Peter & Weiss, Christoph R., 2002. "Staggering and Synchronisation of Prices in a Low Inflation Environment: Evidence from German Food Stores," FE Working Papers 0203, Christian-Albrechts-University of Kiel, Department of Food Economics and Consumption Studies.
    17. Rajiv Lal, 1990. "Price Promotions: Limiting Competitive Encroachment," Marketing Science, INFORMS, vol. 9(3), pages 247-262.
    18. Martin Pesendorfer, 2002. "Retail Sales: A Study of Pricing Behavior in Supermarkets," The Journal of Business, University of Chicago Press, vol. 75(1), pages 33-66, January.
    19. Emi Nakamura & Dawit Zerom, 2010. "Accounting for Incomplete Pass-Through," Review of Economic Studies, Oxford University Press, vol. 77(3), pages 1192-1230.
    20. Emi Nakamura & Jón Steinsson, 2008. "Five Facts about Prices: A Reevaluation of Menu Cost Models," The Quarterly Journal of Economics, MIT Press, vol. 123(4), pages 1415-1464, November.
    21. Varian, Hal R, 1980. "A Model of Sales," American Economic Review, American Economic Association, vol. 70(4), pages 651-59, September.
    22. Emi Nakamura & Dawit Zerom, 2009. "Accounting for Incomplete Pass-Through," NBER Working Papers 15255, National Bureau of Economic Research, Inc.
    23. Sobel, Joel, 1984. "The Timing of Sales," Review of Economic Studies, Wiley Blackwell, vol. 51(3), pages 353-68, July.
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