His figures make interesting reading. They're quite high – he's gone for high-end support for much of the work – but they serve to remind would-be authors why it's so hard to get commercial publishers to take a chance on a manuscript from a new author.
Here at Comely Bank Publishing, we have no magic powers. If pressed, we'd say that marketing presents the biggest challenges: no matter how good a book is, you can't force a bookseller to stock it. There's always a risk your book will fall flat, and many famous books only sold well posthumously.
But there's no harm in trying. And by sharing his experiences of the cost, Kowis has rather neatly given his book more publicity. So let's reward him with a link!