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Ex-post Merger Evaluation in the UK Retail Market for Books

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  • Duso, Tomaso
  • Argentesi, Elena
  • Aguzzoni, Luca
  • Ciari, Lorenzo
  • Tognoni, Massimo

Abstract

This paper empirically evaluates the effects of a merger between the two largest book retail chains in the UK. We build an original dataset of book titles with data on the prices at the store level and at the national level. We then apply difference-in-differences techniques to assess the impact of the merger. A key feature of the books market is that titles become obsolete very quickly. Therefore, we compare different titles before and after the merger in an hedonic approach. Since retail mergers may have either local or national effects (or both) according to the level at which retail chains set prices, we undertake an ex post assessment of the impact of the merger at both aggregation levels. At the local level, we compare the changes in the average price charged before and after the merger in the shops located in overlap areas (i.e. areas where both chains were present before the merger) and in non-overlap areas (i.e. areas where only one chain was present before the merger). Our results do not show any significant difference between non-overlap and overlap areas where the merger could have been expected to generate the strongest effect. To investigate the effects of the merger at the national level, we employ two distinct control groups, namely the competitors and the top-selling titles. In both cases we find that the merger did not result in an increase in prices at the national level. --

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Bibliographic Info

Paper provided by Verein für Socialpolitik / German Economic Association in its series Annual Conference 2013 (Duesseldorf): Competition Policy and Regulation in a Global Economic Order with number 80025.

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Date of creation: 2013
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Handle: RePEc:zbw:vfsc13:80025

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Cited by:
  1. Marie-Laure Allain & Claire Chambolle & Stéphane Turolla & Sofia Villas-Boas, 2013. "The Impact of Retail Mergers on Food Prices: Evidence from France," Working Papers hal-00920460, HAL.
  2. Luca Aguzzoni & Elena Argentesi & Paolo Buccirossi & Lorenzo Ciari & Tomaso Duso & Massimo Tognoni & Cristiana Vitale, 2013. "They Played the Merger Game: A Retrospective Analysis in the UK Videogames Market," Discussion Papers of DIW Berlin 1330, DIW Berlin, German Institute for Economic Research.

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