Robust Pricing for Quality Disclosure

Tan Gan and Hongcheng Li

Papers from arXiv.org

Abstract: A platform charges a producer for disclosing quality evidence to consumers before trade. It aims to maximize its revenue guarantee across potentially multiple equilibria which arise from the interdependence of producer purchase decisions and consumer beliefs. The platform's optimal pricing strategy entrenches itself as a market gatekeeper: it induces a unique equilibrium in which non-disclosed products' perceived values are lower than the production cost. To achieve this goal, this pricing strategy iteratively destabilizes under-disclosure equilibria by luring producers to disclose slightly more. Higher-quality producers receive higher rents as their disclosure is prioritized. Despite losing rents, the platform optimally induces socially efficient information transmission for any given evidence structure, and it never benefits from garbling evidence. Compared to the non-robust benchmark, our framework generates more intuitive comparative statics: the platform's ability to extract surplus increases with its value as an information intermediary.

Date: 2024-04, Revised 2025-06
New Economics Papers: this item is included in nep-com, nep-ind, nep-mic and nep-reg
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