You can really see the point in the series when either success made her stop listening to her Editor, or the Editor stopped trying because of the success, I’ve never been sure which. The first couple of books are pretty tight, and it’s obvious from the later books that that was NOT how Rowling wrote at all.
Over $720 for a signed/leatherbound/new in shrink wrap copy of a book I missed buying for $50 on amazon at release. Part of a series of which I got all the other books at release, and just couldn’t pass when one finally came up for sale, even at a ludicrous price.