Wordpress E-Commerce

• Marketpress - Access through WPMUDev membership $40/month, discount if yearly. WPMUDev allows plugins to be used on at least 100 domains. There is also a Marketpress Lite

http://demostore2.teatra.de/store/ http://www.alexbeaton.com/store/products/ http://ellad2.com/ http://au.the-devotea.com/ https://www.etsy.com/

• WooCommerce - Free version can do quite a bit. A lot more functionality through 'plugins' which cost $30-$130 per extension for 1 site, $100-$300 per extension for 25 sites, for a year of updates/plugins.

http://www.woothemes.com/2013/08/a-sustainable-woothemes/