The e-commerce business has grown significantly over the past few years. mainly due to providing a better customer experience through advance booking and order cancellation options with a full refund. In this paper. the inventory control problem of a firm that offers advance booking for the product and cancellation (with a full refund) before the due delivery date is addressed. https://www.diegojavierfares.com/super-find-Supertech-Performance-Block-Guard-for-Honda-Acura-K24-K24A-K24A2-K24A4-K24A8-Engines-limited-super/