Divi Theme + WooCommerce
This site was designed and built for an online retail company using a combination of the Divi theme and WooCommerce. Slight customization to colors and positioning were made. The clients willingness to be flexible and work with pre-formatted templates greatly reduced development cost and time. This is a great example of a low-cost online store that is comparable to what you would get with Shopify etc, but without the monthly fees.