This is somewhat related to the thread I posted here:
https://www.mobileread.com/forums/sh...d.php?t=316434
My complaint was about "abrupt cutoff", and your complaint is about word/page count.
But the underlying problem is the same: Authors selling short, incomplete works as if they were novels. Trying to make more money off of you by not mentioning, or even intentionally obscuring, the fact that you are not buying a book, you are buying a few pages from a book. With the expectation that you buy more and more of these small groups of pages to finally get the entire book.
Some people consider this legitimate authoring. I disagree ... I consider it a scam. A series of books where characters and other story elements continue on into new adventures in each book is one thing, small page groups sold piecemeal is totally different. Other people can of course have different opinions, I just know that I, personally, won't knowingly support authors that use this "technique".