A Model of Add-On Pricing*
构建了一个附加定价的竞争模型，分析企业通过低价广告吸引消费者、再高价销售附加产品的策略，发现该做法会弱化价格竞争并提高均衡利润。
This paper examines a competitive model of add-on pricing, the practice of advertising low prices for one good in hopes of selling additional products (or a higher quality product) to consumers at a high price at the point of sale. The main conclusion is that add-on pricing softens price competition between firms and results in higher equilibrium profits. In many businesses it is customary to advertise a base price for a product or service and to try to induce customers to buy additional “add-ons ” at high prices at the point of sale. The quoted price for a hotel room may not include phone calls, in-room movies, minibar items, dry cleaning, etc. Electronics stores offer extended warranties and accessories. Car