The economics of my first month making TTRPG content

A month ago, I created a game through the RPG Writer's Workshop and a few other products.  One month in, I crunched some numbers, made some graphs, and came to some preliminary conclusions that would have been helpful to know one month ago.

If you are reading this bundle because you're thinking of selling TTRPG content but haven't dove in yet, this is for you.  If you're an experienced professional, it probably isn't much use.  Also, obviously, experiences vary a lot.