I should preface this post by stating I'm a huge fan of books on writing. My favorites are The Sound On The Page by Ben Yagoda and Bird By Bird by Anne Lamott. I describe both as brilliant, joyful to read, and inspiring. That's a good review.
Now onto the bad. When I'm browsing e-books looking for something similar I'm astounded by how much crap I have to sift through. Now, I'm the queen of typos at first pass, but if I'm going to try to sell a book on writing the least I can do is make sure it's edited properly.
There's a myriad of fifty plus paged badly written hyped up digital books on how to write a book in no time, with little effort, and make six figures. I'm curious how one picks one of the hardest professions to make a living at and buys it as a get rich quick idea. Given how many e-books there are someone has to be buying them.