Elegant Themes Divi
You can now buy Divi child themes, layouts, and plugins in the official Divi marketplace run by Elegant Themes.
A Divi theme example for Elegant Themes Divi.
There are lots of great Divi theme examples on this site, but remember that the Divi theme comes with a number of really nice Divi layouts that can be activated on your site with the click of a button in the Divi Page Builder.
With some new graphics and text, you can have a really nice looking Divi site with very little work involved.