Just check out my author profile on this blog post here:
https://mrdzyn.com/best-practices-when-choosing-off-the-shelf-vs-custom-software-solutions/

Featured also on How I Built a Wordpress Website using Tools Bought on Appsumo here:
https://youtu.be/KO0H5N4gsD8

Cheers,
Mike
Certified LTD Junkie