We investigate monopoly profit under a new online tying strategy, namely sequential bundling. This method allows customers to buy additional products at discounted prices immediately after purchasing one or some of the available products. This strategy has been practiced by Walmart and others but has not been modelled to date. We use microeconomics analysis to conduct a comparison of the gained profit with the three commonly used bundling strategies: no bundling, pure bundling and mixed bundling. The main result shows that the sequential bundling strategy yields higher profits in comparison to all three classic strategies. In particular, for the symmetric cost case, our model provides a useful tool for practitioners such as common online shops.

我们根据新的在线捆绑策略（即顺序捆绑）调查垄断利润。此方法允许客户在购买一种或某些可用产品后立即以折扣价购买其他产品。沃尔玛（Walmart）等人已经采用了这种策略，但迄今为止尚未进行建模。我们使用微观经济学分析对获得的利润与三种常用的捆绑策略进行比较：无捆绑，纯捆绑和混合捆绑。主要结果表明，与所有三种经典策略相比，顺序捆绑策略产生更高的利润。特别是，对于对称成本情况，我们的模型为从业人员（例如常见的在线商店）提供了有用的工具。