Lot of people sell similar components (or give them for free), but what I would really be interested in is a course how to make them (properly, e.g. with a11y and performance considerations). Especially in your case, since you are basically selling somebody else's work (the original design), which is a shitty thing to do. You could monetise this in a much more ethical way.

Actually the initial plan was for this to be a course of demonstrating how to build these components. Perhaps if there's enough demand, I might consider that. And I get that not everyone will agree with the approach, but I’m trying to be respectful about it.

There are other, similar sites which do this. One example: https://madewithgsap.com/