Use Joomla to build a virtual store online. It is easy to get up and running because there is a very powerful, free, open-source E-Commerce platform available for Joomla!
The platform is called Virtuemart, and I’m going to show you to how to install it on your newly installed Joomla 2.5 system.
Once you have installed Virtuemart, you can build an online store. Add products to categories, create tax and shipping rules, put a shopping cart on your site, and let your visitors check out with Paypal, right out of the box.
There are hundreds of extensions that make Virtuemart more powerful. Some of them include things like Google Checkout cart integration, Affiliate programs, custom store templates, advanced product displays, quickbooks integration, and analytics.