If you have experience building sites, you might want to consider using osCommerce. The os in osCommerce stands for “open source” which ultimately means “free”; however, with open source you need at least a small amount of experience when using the product.

The great thing about osCommerce (besides being free) is that it is fully customizable including, design, features, payment processing, SEO, etc. Since the product is open source, developers can and have created modules to enhance the product to meet just about every individual need you could have. “Out of the box” osCommerce is functional and has a pre-loaded database for you to use. However, any respectable business will want to modify the store to match your own personality and product type. There are hundreds of templates for you to choose from for your store.  Selecting one allows you to quickly create a professional looking store in a very short time period.