Zone Pricing in Retail Oligopoly
研究了零售寡头市场中区域定价（在不同市场设定统一价格）的福利效应，发现家得宝偏好更精细定价而劳氏偏好更粗放定价，区域定价总体上比精细价格歧视带来更高的消费者剩余。
We quantify the welfare effects of zone pricing, or setting common prices across distinct markets, in retail oligopoly. Although monopolists can only increase profits by price discriminating, this need not be true when firms face competition. With novel data covering the retail home-improvement industry, we find that Home Depot would benefit from finer pricing but that Lowe’s would prefer coarser pricing. Zone pricing softens competition in markets where firms compete, but it shields consumers from higher prices in rural markets, where firms might otherwise exercise market power. Overall, zone pricing produces higher consumer surplus than finer price discrimination does.