This is a list of free and simple resources I've found for building websites. Each of these sites is better at a different type of site.

Go Spaces

Great for selling a single product, a small number of products, or for test marketing. Supports physical products, subscriptions or digital downloads. Choose your favorite payment processing service that have no up-front costs such as PayPal and Stripe. Clutter free and responsive design that is customizable. Use your own domain name. Support for multiple stores.