Setting up a MageBridge site involves a fair amount of work - as any other Magento site would. But on the area of template design, you can gain a lot of time by replacing the Magento theming with Joomla! templating. This concept of combined theming allows you to apply Joomla CSS rules to Magento HTML (originating from the Magento theme).
For various templates of RocketTheme and YOOtheme, we have created CSS-patches that allow you to integrate the Magento Default Theme easily in those Joomla! templates using MageBridge. Setting up a MageBridge site still requires technical knowledge (PHP, HTML, etcetera), but these template-patches give you an incredible kick-start.
You can use these patches freely. Note that we do not provide support for this, because these patches should be part of your own customization process.