How many are in the complete series? I haven’t read a one yet, but will someday, when I get sick and am laid up for a while. Love the movies. Rawlings will write more of something. Writers write because they have to, not because of the money (except Heinlein of course).
7 books.
Heinlein wrote because he had to, too, no matter what he said. You can’t do otherwise and write something worth reading.
Also, her name is “Rowling”, pronounced like “bowling”, fyi.
If you're laid up and can't see/read, I highly recommend the audio books...