Your website doesn't have to be an ecommerce website, but if it is, then you will really love Site by Nite. In fact, the complexity and costs associated with ecommerce sites have kept a lot of people from getting their websites up and running, or they've decided not to have ecommerce on their site.
The Site by Nite website builder can create "Add to cart" buttons for a PayPal shopping cart. PayPal is an ideal choice for smaller ecommerce sites or sites that are just getting started. Using a PayPal business account, you can accept credit cards as well as PayPal payments, even from those who don't have a PayPal account themselves.
The greatest benefit is that you are only charged when you make a sale and the fees are often less than typical merchant account setups. A regular ecommerce setup would require you to have a merchant account, setup a payment gateway, get an SSL certificate and you will probably be looking at about $30 or more a month regardless of sales.
Site by Nite will let you setup your items or services for sale just by filling out a form. You don't need to setup a database backend or go through all of the typical tasks of setting up and running an ecommerce site.
What's more, you can add this functionality at anytime. So even if your website starts out without it, you can integrate it right into your existing site later. Often with regular ecommerce shopping cart systems, the entire site has to be reworked or built around the cart itself, creating additional work and expense, and sometimes requiring you to change the look of your site to accomodate the cart system. You won't have to worry about that with Site by Nite.