Still, there's a BIG difference between the scam authors on Amazon Prime, trying to push 10,000 word 'novels' (less than many SOL chapters) and a typical published science fiction sage of 120,000 words. My books generally fall into the latter category, as most of my books run around 20+ chapters of about 100,000 to 150,000 words.
Two extremes come to mind for me, an unknown(to me) author has a story that has my interest and I would like to see what he has written. But I won't buy his book, because Amazon kindle reports the length at 54 pages, he's asking $6.00 for the ebook, and Kindle Unlimited is not an option with him.
Even for an author I trust and enjoy, a $6 ask for 54 "kindle" pages is rather steep IMO. That the author is unknown, doesn't seem to have any other work to sample, and so on just further underlines why "no sale" is the outcome he is likely encountering from a lot of potential readers.
It didn't discourage everyone as it sometimes appears in the Amazon "also bought" listing, but that brings in the other issue: It has a single 1 star review from someone who pointed out length + price and stated they're not buying. If it had some positive reviews, the story might be different, but in the absence of any...
The other extreme is a self-published ebook series where the asking price is very reasonable and the length makes it look like something to sink your teeth into. (400+ pages for under $2.00)
Spelling and grammar were good enough. But it was a poster child of another editing task that often gets ignored.
In some respects it reads like the editors were given the associated chapters in a serial form, and probably spread over large amounts of time. (It also prompted me to go searching for the story on various online sites, no joy) As it is very evident the books were not edited as cohesive wholes.
This resulted in the characters constantly "going back" and either mentally or verbally recalling events that happened within the same book. Not once, not twice, but many, many times. There was a lot of other content thrown in which doesn't appear to be relevant to the storyline itself. So all things considered, after a good solid "wholistic" editing pass, the size of those books could probably be reduced by anywhere between a quarter to a third. (There also is no means to contact the author aside from leaving a public review)