Price Coherence and Adverse Intermediation
Benjamin G. Edelman
Harvard University - HBS Negotiations, Organizations and Markets Unit
National University of Singapore (NUS) - Department of Economics
December 30, 2013
Harvard Business School NOM Unit Working Paper No. 14-052
Suppose an intermediary provides a benefit to buyers when they purchase from sellers using the intermediary's technology. We develop a model to show that the intermediary will want to restrict sellers from charging buyers more for transactions it intermediates. We show that this restriction can reduce consumer surplus and welfare, indeed sometimes to such an extent that the existence of the intermediary can be harmful. Specifically, lower consumer surplus and welfare result from inflated retail prices, over-investment in providing benefits to buyers and excessive adoption of the intermediaries services. Competition among intermediaries intensifies these problems, increasing the magnitude of their effects and also broadening the circumstances in which they arise. We discuss applications to travel reservation systems, payment card systems, marketplaces, rebate services, search engine advertising, and various types of brokers and agencies.
Number of Pages in PDF File: 62
Keywords: intermediaries, platforms, two-sided markets, price coherence
JEL Classification: D40, L11working papers series
Date posted: January 2, 2014 ; Last revised: January 3, 2014
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