To me, this is a no-brainier even if you maxed out on Coassemble (like I did). I'm using Coassemble to build courses to be used in my organization. (fits better with the user limits) And I'm using the Heights platform to build courses to sell externally. Really seems like the whole package, including billing and generous user limits. The UI is a bit dated, but not awful. The support team is spot on and based on my Trello notifications, they are rocking and rolling on their roadmap. I'm excited for this one.