Upselling and cross-selling are great ways to take full advantage of selling more to a current customer who is already on your website. Create combos of 3-4 complementary products that go well together and offer the whole package to customers at a discount on the total. These kinds of combo promotions work very well on big sales days as Black Friday and Cyber Monday, when people are actively looking for package deal for a much better price.

Smarter tool to upsell & cross-sell with discounts: Boost Sales.