literally the easiest cart software in the world to set up....can have a shop up and running in minutes, especially with the "duplicate product" feature :c)
All hosted on amazon servers aswell, so fast and safe.
Only downside is, it's all ajax based, so unless you assign each catregory of the shop to a menu item/page on your site, you have no real SEO on the different areas.....
But theres some serious upsides too (such as drag and drop to cart ), so well worth a look. We use it on
www.marlownailandbeauty.co.uk
under "products" if you want to see it in action..ps, im not affiliated with any of these things, I just thought i'd share what I've found over the last year or so
The other piece of cart sofrtware which blew my mind ... was prestashop....not sure how easily it integrates in joomla, but it was awesome.