OK - Just What Is A Shopping Cart Supposed to Do? Shopping carts are more commonly used as a way to display physical products, products like televisions, groceries, electronic equipment, clothes, and memorabilia, etc, NOT digital products. Shopping carts make it easy to cross-sell and up-sell your customers once they arrive at your store. Shopping carts typically handle the shipping and handling calculation, taxes and credit card processing. A good shopping cart handles all of…