Content displayed in template demos on Marketplace page is for illustration purpose only. Currently TemplateToaster provide content import feature only for WordPress i.e. WordPress with Content. Right now, our development team is working on Joomla with Content, we will soon provide the feature in future version of TemplateToaster. Meanwhile, you can add content in your Joomla website from the CMS backend after installing TemplateToaster exported zip, styles and layout will be applied to your Joomla pages same as designed in template.