Show Me the Money: The Economic Impact of Membership-Based Free Shipping Programs on E-Tailers
研究了电商在已有条件免运费政策基础上引入会员制免运费计划的经济影响，通过模型分析消费者异质性，发现会员制能进一步细分市场，但会员费收入无法弥补免运费成本，需通过市场细分带来的其他收益弥补。
This research examines the economic impact of membership-based free-shipping (MFS) programs when introduced as an augmentation to widely accepted contingent free-shipping (CFS) policies. Under CFS, consumers waive the shipping surcharge if the order exceeds a certain threshold, whereas under MFS, consumers pay an upfront fee and enjoy the free-shipping perk throughout the membership period. We develop a stylized model that considers consumer heterogeneity in two dimensions: (1) disutility from acquiring an auxiliary product—a product that consumers would not otherwise purchase—to qualify for CFS; and (2) shopping frequency over a given period. Our analysis suggests that the introduction of MFS allows the e-tailer to segment the market further, which could lead to a higher product price. When the disutility from acquiring an auxiliary product is moderate, the e-tailer should charge a high membership fee to target only frequent shoppers who forgo CFS. However, the e-tailer should lower the fee to lure also (1) frequent shoppers who would otherwise take CFS, when the disutility is high; or (2) infrequent shoppers who would otherwise forgo CFS, when the disutility is low. In all cases, although the collected fee revenue can never compensate for the cost arising from offering the free-shipping perk, the loss can be recouped as a desirable outcome of a more segmented market. Our research generates insights into the optimal design of e-tailers’ shipping policies, shedding light on the practical challenges that confront e-tailers.