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Expert-mediated sequential search

  • Chhabra, Meenal
  • Das, Sanmay
  • Sarne, David
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    This paper studies markets, such as Internet marketplaces for used cars or mortgages, in which consumers engage in sequential search. In particular, we consider the impact of information-brokers (experts) who can, for a fee, provide better information on true values of opportunities. We characterize the optimal search strategy given a price and the terms of service set by the expert, and show how to use this characterization to solve the monopolist expert’s service pricing problem. Our analysis enables the investigation of three common pricing schemes (pay-per-use, unlimited subscription, and package pricing) that can be used by the expert. We demonstrate that in settings characteristic of electronic marketplaces, namely those with lower search costs for consumers and lower costs of production of expert services, unlimited subscription schemes are favored. Finally, we show that the platform that connects consumer and experts can improve social welfare by subsidizing the purchase of expert services. The optimal level of subsidy forces the buyer to exactly fully internalize the marginal cost of provision of expert services. In electronic markets, this cost is minimal, so it may be worthwhile for the platform to make the expert freely available to consumers.

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    Article provided by Elsevier in its journal European Journal of Operational Research.

    Volume (Year): 234 (2014)
    Issue (Month): 3 ()
    Pages: 861-873

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    Handle: RePEc:eee:ejores:v:234:y:2014:i:3:p:861-873
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    1. Weitzman, Martin L, 1979. "Optimal Search for the Best Alternative," Econometrica, Econometric Society, vol. 47(3), pages 641-54, May.
    2. Mortensen, Dale T. & Pissarides, Christopher A., 1999. "New developments in models of search in the labor market," Handbook of Labor Economics, in: O. Ashenfelter & D. Card (ed.), Handbook of Labor Economics, edition 1, volume 3, chapter 39, pages 2567-2627 Elsevier.
    3. Paul R. Milgrom, 1981. "Good News and Bad News: Representation Theorems and Applications," Bell Journal of Economics, The RAND Corporation, vol. 12(2), pages 380-391, Autumn.
    4. Xianjun Geng & Maxwell B. Stinchcombe & Andrew B. Whinston, 2005. "Bundling Information Goods of Decreasing Value," Management Science, INFORMS, vol. 51(4), pages 662-667, April.
    5. Lippman, Steven A & McCall, John J, 1976. "The Economics of Job Search: A Survey," Economic Inquiry, Western Economic Association International, vol. 14(3), pages 347-68, September.
    6. Anonymous, 1994. "Research Updates," Journal of Food Distribution Research, Food Distribution Research Society, vol. 25(1), February.
    7. repec:tpr:qjecon:v:84:y:1970:i:1:p:113-26 is not listed on IDEAS
    8. P. Diamond, 1980. "Aggregate Demand Management in Search Equilibrium," Working papers 268, Massachusetts Institute of Technology (MIT), Department of Economics.
    9. Wright, Randall, 1986. "Job Search and Cyclical Unemployment," Journal of Political Economy, University of Chicago Press, vol. 94(1), pages 38-55, February.
    10. Kenneth Burdett & Randall Wright, 1994. "Two-sided search," Staff Report 169, Federal Reserve Bank of Minneapolis.
    11. Alp Atakan, 2005. "Assortative Matching with Explicit Search Costs," 2005 Meeting Papers 218, Society for Economic Dynamics.
    12. Michael Smith & Erik Brynjolfsson, 1999. "Frictionless Commerce? A Comparison of Internet and Conventional Retailers," Computing in Economics and Finance 1999 1022, Society for Computational Economics.
    13. Wilson, Kurt E. & Szechtman, Roberto & Atkinson, Michael P., 2011. "A sequential perspective on searching for static targets," European Journal of Operational Research, Elsevier, vol. 215(1), pages 218-226, November.
    14. David Dranove & Ginger Zhe Jin, 2010. "Quality Disclosure and Certification: Theory and Practice," Journal of Economic Literature, American Economic Association, vol. 48(4), pages 935-63, December.
    15. Kang, Byung-Kook, 2005. "Optimal stopping problem with double reservation value property," European Journal of Operational Research, Elsevier, vol. 165(3), pages 765-785, September.
    16. repec:rje:randje:v:37:y:2006:3:p:668-691 is not listed on IDEAS
    17. Michael R. Baye & John Morgan, 2001. "Information Gatekeepers on the Internet and the Competitiveness of Homogeneous Product Markets," American Economic Review, American Economic Association, vol. 91(3), pages 454-474, June.
    18. Galeotti, Andrea & Moraga-González, José Luis, 2009. "Platform intermediation in a market for differentiated products," European Economic Review, Elsevier, vol. 53(4), pages 417-428, May.
    19. James B. MacQueen, 1964. "Optimal Policies for a Class of Search and Evaluation Problems," Management Science, INFORMS, vol. 10(4), pages 746-759, July.
    20. Christian Terwiesch & Christoph H. Loch, 2004. "Collaborative Prototyping and the Pricing of Custom-Designed Products," Management Science, INFORMS, vol. 50(2), pages 145-158, February.
    21. Marc Rysman, 2009. "The Economics of Two-Sided Markets," Journal of Economic Perspectives, American Economic Association, vol. 23(3), pages 125-43, Summer.
    22. Haynes, Michelle & Thompson, Steve, 2008. "Price, price dispersion and number of sellers at a low entry cost shopbot," International Journal of Industrial Organization, Elsevier, vol. 26(2), pages 459-472, March.
    23. Grosfeld-Nir, Abraham & Sarne, David & Spiegler, Israel, 2009. "Modeling the search for the least costly opportunity," European Journal of Operational Research, Elsevier, vol. 197(2), pages 667-674, September.
    24. Yannis Bakos & Erik Brynjolfsson, 1997. "Bundling Information Goods: Pricing, Profits and Efficiency," Working Paper Series 199, MIT Center for Coordination Science.
    25. Cason, Timothy N. & Friedman, Daniel, 2003. "Buyer search and price dispersion: a laboratory study," Journal of Economic Theory, Elsevier, vol. 112(2), pages 232-260, October.
    26. Benjamin Bental & Dan Peled, 2002. "Quantitative growth effects of subsidies in a search theoretic R&D model," Journal of Evolutionary Economics, Springer, vol. 12(4), pages 397-423.
    27. Edward A. Baryla, Jr. & Leonard V. Zumpano & Harold W. Elder, 2000. "An Investigation of Buyer Search in the Residential Real Estate Market under Different Market Conditions," Journal of Real Estate Research, American Real Estate Society, vol. 20(1), pages 75-91.
    28. Arun Sundararajan, 2004. "Nonlinear Pricing of Information Goods," Management Science, INFORMS, vol. 50(12), pages 1660-1673, December.
    29. BLOCH, Francis & RYDER, Harl, 1994. "Two-Sided Search, Marriages and Matchmakers," CORE Discussion Papers 1994028, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
    30. Robin S. Lee & Michael Schwarz, 2009. "Interviewing in Two-Sided Matching Markets," NBER Working Papers 14922, National Bureau of Economic Research, Inc.
    31. J. Yannis Bakos, 1997. "Reducing Buyer Search Costs: Implications for Electronic Marketplaces," Management Science, INFORMS, vol. 43(12), pages 1676-1692, December.
    32. Hak Chun, Young, 1996. "Selecting the best choice in the weighted secretary problem," European Journal of Operational Research, Elsevier, vol. 92(1), pages 135-147, July.
    33. Lippman, Steven A & McCall, John J, 1976. "The Economics of Job Search: A Survey: Part I," Economic Inquiry, Western Economic Association International, vol. 14(2), pages 155-89, June.
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