Cs Cart is a complete package for online ecommerce websites. It is available for single vendor, multiple vendors and multiple stores as well. Cs cart is not available free of cost. If you want to use cs cart for your online shopping cart, you need to purchase it's license.
As there are multiple packages, it costs respectively based on the chosen package. To see demo of cs cart features and all sections how does it work, you can download the setup and install without license key and it will allow you around a month only in free mode.
Cs cart comes with a lot of inbuilt features which we can use for our store like its layout management, features, promotions, order management, import/export feature of products in bulk, user friendly admin panel, SEO keyword management etc.
Cs cart is best to be used for small to medium level online shopping websites.