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Price Advertising, Double Marginalisation and Vertical Restraints

Garrod, Luke and Olczak, Matthew and Wilson, Chris M (2020): Price Advertising, Double Marginalisation and Vertical Restraints.

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Abstract

Abstract The developing literature on consumer information and vertical relations has yet to consider information provision via costly retail price advertising. By exploring this, we show that the double marginalisation problem exists in equilibrium despite an upstream supplier offering a two-part tariff that is common knowledge to consumers. Intuitively, the supplier elicits higher retail prices to strategically reduce retailers' advertising expenditure in order to extract additional rents. We then demonstrate how vertical restraints, such as resale price maintenance, can increase supply-chain profits and consumer welfare by lowering retail prices despite paradoxically discouraging price advertising.

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