The document compares features of different ecommerce solutions for Joomla including SimpleCaddy, RokQuickCart, redSHOP, Virtuemart 2.0 RC2, and Tienda 2.0 RC2. It outlines various aspects such as price, compatibility, support, updates, payment options, tax support, and other features to help determine the best solution. In general, redSHOP and Virtuemart provide more full-featured stores while SimpleCaddy and RokQuickCart are more basic plugin-based systems.