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The Economic Theory of Price Discrimination via Transactions Bundling: An Assessment of the Policy Implications


  • Dassiou Xeni

    (Dept. of Economics, City University, London)

  • Glycopantis Dionysious

    (Dept. of Economics, City University, London)


This paper discusses specific cases in financial regulation, competition law and legal rules in procurement, in light of the economic concept of the efficiency of mixed bundling as derived in our theoretical models. We assess the appropriateness of the existing rules, and also discuss whether there is a need to reform specific legal or regulatory rules in light of the efficiency discussion. We examine the U.S. legal and regulatory framework in government procurement, the offsets case, and finally we look into financial regulation in the case of bundled brokerage and soft commission arrangements on both sides of the Atlantic. The novelty of our models is that we analyze transactions mixed bundling in the cases of monopoly, monopsony and exchange. Additionally, for the cases of monopsony and exchange we consider goods of varying degrees of quality certainty. The common result is the local optimality of the bundling of transactions in terms of expected profits for the price-setting firm, and an overall increase in the level of trade in the goods bundled. In the real-life cases examined, we found that in most instances the authorities have decided that if the practice of pure bundling is present, to replace it with mixed bundling, rather than ban bundling altogether. This practice is correct, as according to our models mixed bundling is efficiency-enhancing (both in profits and in trade volumes). On the other hand, the policy implications derived from our models based on the presence of quality uncertainty suggest that allowing the bundling of dissimilar tasks is beneficial rather than damaging to trade, especially if the goods bundled are of diverse degrees of quality certainty. This is at odds with the current legal and regulation approach to bundling practices.

Suggested Citation

  • Dassiou Xeni & Glycopantis Dionysious, 2006. "The Economic Theory of Price Discrimination via Transactions Bundling: An Assessment of the Policy Implications," Review of Law & Economics, De Gruyter, vol. 2(2), pages 323-348, October.
  • Handle: RePEc:bpj:rlecon:v:2:y:2006:i:2:n:5

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    Cited by:

    1. Xeni Dassiou & Dionysius Glycopantis, 2012. "Optimal Decisions in Two-stage Bundling," Chapters,in: Recent Advances in the Analysis of Competition Policy and Regulation, chapter 5 Edward Elgar Publishing.
    2. Dassiou, Xeni & Glycopantis, Dionysius, 2008. "Price discrimination through transactions bundling: The case of monopsony," Journal of Mathematical Economics, Elsevier, vol. 44(7-8), pages 672-681, July.

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