I normally know within the first few chapters if I am really going to like a book. I have always said I really wished I could get the first half of any book and then pay if I wanted to read the rest. So many books are frankly not worth it. There is unfortunately no (legal) way to get a good preview of your book.
Anecdotal evidence: I bought a book I was hesitant about like this one off of smashwords after getting about 25 pages in or so.
For your book, I would recommend the first 31 pages (until the end of chapter 5), if you want to really hook me.
So how did I get over my hesitation on this book? I am going to plead the 5th on that one, but I would swear in an Oorstemothian court that I own a legal copy of the book and that I read the book after buying it. Hopefully the Oorstemothians don’t see the equivocation there. 8-[
The cover is not very good. I don’t have any problems with the actual scene. In fact, the demon being represented so prominently made me look twice when I was glancing through books. But the art style, which I can only describe as 3d animation without the animation, is not my thing. Also, the fish netted leg seems to be connected too high on the demon and doesn’t look right.
I have no idea who any of the characters are (other than Tom) in the picture and I read the book! Is there a guy wearing a crown tied up in the back?