You can now buy Divi child themes, layouts, and plugins in the official Divi marketplace run by Elegant Themes.
Madeline child theme for Divi
Madeline is is a premium Divi Child Theme designed for your home, decor, interior design, interior decoration, or remodeling firm. released by Brand Elemental (formerly Sunflower Blog Designs).
"Madeline is designed specifically for your home, decor, interior design, interior decoration, or remodeling firm. It can be also used as a multi-purpose theme. Madeline offers a simplistic, soft, yet modern approach that will allow you to showcase your business or portfolio. It comes with 10 pre-designed pages."