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Only with joomla, but they're free... and with a big community sharing new components, plugins, and modules... ZenCart is other good option.

It's better folder than subdomain. Google often looks subdomains like other sites. And we have made some test with subdomains vs. folders, in our landing pages, and landing content in folder (named with keyword), ranks better than the same landing page in a subdomain (named with keyword).

I hope this can help you

Hi waayne

We're using Virtuemart 2.0.6. Free and easy to use. You can download it from www.virtuemart.net.

I hope this can help you.