You can now buy Divi child themes, layouts, and plugins in the official Divi marketplace run by Elegant Themes.
A Divi Theme example for Maria Fung who is an integrated graphic designer, writer and D.I.Y craft-maker.
This Divi website uses the following plugins;
WooCommerce Quantity Increment
WooCommerce PayPal Express Checkout Payment Gateway
WP Image Zoom
Product Enquiry for WooCommerce