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Tolksdorf, Michel (14. January 2022): Experimenting with Purchase History Based Price Discrimination: a Comment. Collaborative Research Center Transregio 190, Discussion Paper No. 310
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Abstract

Brokesova, Deck and Peliova [Int. J. Ind. Organ. 37 (2014) 229-237] have shown that comparative static results from two-period behavior-based pricing models hold in laboratory experiments, but they observed significant differences from point predictions. We report findings in conformity with these point predictions throughout a uniform pricing benchmark, a replication of Brokesova, Deck and Peliova’s behavior-based pricing treatment and a follow-up experiment. Reference dependence seems to shift participants’ second-period pricing behavior upwards. A post hoc analysis shows that considering myopic consumers instead of strategic consumers explains a downward shift of first-period prices and rationalizes the findings of Brokesova, Deck and Peliova. Volatile price levels affect price-based welfare measures such as sellers’ profits and customers’ total costs. We show that transport costs serve as a robust welfare measure, alleviating the impact of distorted prices. These findings are relevant for the design of experiments and when assessing the efficiency of experimental markets.