A cart should not be complex for clients. It should be simple and to top it all, the navigation and organisation of products should be easy and pleasing. Complicated carts are a sure turn off for r potential buyers. The program should support additional information on products where needed. This will make the shopping experience easier. Those who have links that do not provide what is promised risk loosing the loyalty of shoppers. Adding items to cart should be easy and the pricing details should be simple as well.