Re: Book projects generally work out
The production cost for an ebook is simply the author's time.
Not for a good ebook.
Very few people are talented authors, competent writers, and capable of decent development editing and copy-editing. And even those rare sorts know that editing your own work is considerably more difficult than editing someone else's (due to various psychological factors, such as reading what you expect to find rather than what's actually on the page); and trying to do all the work yourself is very resource-intensive.