Hikashop is a Joomla extension published in 3 different editions: Hikashop starter (free), Hikashop essential and hikashop business .
HikaShop is a native E-Commerce extension for all versios of Joomla. It is built for simplicity and flexibility. HikaShop also has a wide range of marketing tools, but also powerful statistics displayable on your HikaShop dashboard to help you manage your store.It provides advanced taxes, zones, languages and currencies management for worldwide sales as well as advanced customization capabilities of your online shop in order to meet your website ecommerce needs. HikaShop Starter is a complete e-commerce solution which will allow you to have a full-flegded online shop on your Joomla website in minutes.
The best I've seen. With the free version, you can already do amazing things: Configure what you want, even the order process by drag and drop! < br/> The support is really good, in French and English and free too. < br/> Remember that you will need a few hours to go around and set it up from A to Z