You can now get Divi child themes, layouts, and plugins in the official Divi marketplace run by Elegant Themes.
A free Divi child Theme for business websites
.. free doesn't always mean low quality as this free child theme for Divi from Tim Strifler at Divi Life shows.
"Divi Business is a FREE multipurpose business child theme for Divi. With modern yet professional design, Divi Business is perfect for almost any business website and will help you jumpstart your next project.
Divi Business includes a “one-click” install to quickly get the child theme looking like the demo in minutes."
For more amazing child themes head over to the DIvi Theme Examples child theme directory which lists 100's of pre-made child theme templates for Divi.