Several variables might cause a considerable variation in the cost of developing an e-commerce website in the United States. These variables include the website's complexity, the necessary features and functions, the development team's level of expertise, and the company's location. A custom-built e-commerce website can cost anything from a few thousand to tens of thousands of dollars, while a precise price is hard to give. Before deciding, it is advised to get estimates from several eCommerce website development company in USA » to compare costs and services.