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 Justin Boughton, a web designer/developer. Not only does he have a slanted section divider, the text above it is also slanted, which is quite unique.
This Divi Theme website uses the following plugins;
WP Estimation & Payment Forms Builder
Paid Membership Pro
Surbma - Divi & Gravity Forms
WP Support Plus Responsive Ticket System