Research on the Sharing of Logistics Service of E-Commerce Platform under Cost Information Asymmetry

随着零售行业的持续发展，电商平台在开展自营业务的同时，普遍引入第三方卖家参与其在线市场，并逐步开放自建物流服务，卖家支付相应服务费用作为回报。本文构建了一个包含平台与拥有私有采购成本信息的第三方卖家的在线销售系统，研究平台在与卖家存在潜在竞争关系下的物流服务共享问题。研究结果表明：共享物流服务始终有利于第三方卖家；平台收益的变化则受到跨渠道服务敏感性的影响；而最优服务费用的设定与消费者的跨渠道价格敏感性密切相关。With the continuous development of the retail industry, e-commerce platforms generally introduce third-party sellers to participate in their online marketplaces while carrying out their own business, and gradually open up their self-built logistics service, and sellers pay corresponding service fees in return. This paper constructs an online sales system that includes the platform and third-party sellers with private procurement cost information, and studies the problem of logistics service sharing under the potential competition between the platform and third-party sellers. The results show that logistics service sharing is always beneficial to third-party sellers; changes in platform revenue are affected by the sensitivity of cross-channel service; and the setting of optimal service fees is closely related to the cross-channel price sensitivity of consumers.