You can now buy Divi child themes, layouts, and plugins in the official Divi marketplace run by Elegant Themes.
A Divi Theme website example for Moin Sticker which is a site for the Moin festival (I think..)
This website uses the following Divi Theme plugins;
2 Click Socialmedia Buttons
Mailchimp For WP
Google Analytics For Wordpress
Responsive Gallery Grid
Disqus Comment System