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Econ Brief

Cutting-edge research from the UCL Department of Economics

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Author: John Vickers

  • The illusion of choice: multibrand price dispersion in modern retail

    Prices & interest rates

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    26th January 2026

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    Mark Armstrong

    John Vickers

    Modern consumers are used to a flood of options whenever they are shopping for something. Whether it’s car insurance or fizzy drinks, there are endless brands from which to choose. But many brands are owned by the same firms – and this affects how suppliers set their prices.

    The illusion of choice: multibrand price dispersion in modern retail

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