As a drop shipping business, you want to maximize every transaction in any way possible. This is why implementing product upselling and cross-selling techniques can help you maximize your transactional value. There's a subtle difference between the two, which is why they are always combined as a single marketing strategy. But, both help in increasing impulsive buys and growing your store's revenue as high as 70%.
Amazon is popularly known to use upselling and cross-selling techniques with its "Frequently Bought Together" marketing.
Suggested tool: Boost Sales