A cart page is an essential part of an e-commerce website like this site Bestestore7.com. It is the Cart page where users can pile up what they want to buy from the website and then simply checkout by paying online. To comprehend what a cart page does, think of it as a normal shopping cart in a store. People can keep adding whatever they want to buy in the shopping cart, and later, check out at the counter. Similar is the case with a cart page, only that the shopping is done online on an e-commerce website.