This paper challenges the common assumption of perfect market segmentation in models based on monopolistic competition. We develop a tractable approach to analyze export entry and pricing decisions of firms and show that the trade costs triangle condition (absence of potential re-exporting arbitrage) imposes constraints on firm-level export prices, which have first-order implications for trade and welfare. We provide empirical evidence that the triangle condition is violated in the data and quantify the importance of these violations in a general equilibrium setting.

中文翻译：

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一体化市场与细分市场：对出口定价和福利的影响

本文挑战了基于垄断竞争的模型中完美市场分割的常见假设。我们开发了一种易于处理的方法来分析企业的出口进入和定价决策，并表明贸易成本三角条件（不存在潜在的再出口套利）对企业层面的出口价格施加了限制，这对贸易和福利具有一阶影响。我们提供了数据中违反三角形条件的经验证据，并量化了这些违反在一般均衡设置中的重要性。