Evil Editor: I think it's time we quit complaining about the length of books. Ebooks have established that they're here to stay, and plenty of novella-length books are selling in ebook format.
It's easier for publishers to scale down prices for books in the 50,000- and 40,000-word ranges when it comes to ebooks, because the most expensive part of the book to manufacture is the cover. Thus even short books cost almost as much as long ones. With ebooks, you merely show the cover, no expensive paper with lamination and gold leaf and 3D holograms.
True. not all publishers will lower prices on shorter ebooks, if they publish them at all, but I predict fewer and fewer publishers will reject books solely on length as time goes by.