The landing page for the book is very good. I specially like the call to action button. Good color choice, size, and font. I would add an additional button in t

The landing page for the book is very good. I specially like the call to action button. Good color choice, size, and font. I would add an additional button in the middle of the page. In the area where it says "This book covers the following and more:" (green background). In fact, everyone could use this as a good template to follow for programming books. Though they could also use your approach of a colorful cover to draw attention (it pops out in your blog), and ad placement in the blog (top of sidebar, next to the first paragraph of the post). The blog article also made me want to buy the book. This is a very well designed product campaign that is simply not spammy, and valuable. Even if I don't buy the book, I get value from reading the posts. Have you tested other pricing strategies? Like $13.99 or $14.99? I think $14.99 would net you a slight bigger sale without a loss of sales. Though $13.99 might have them drop due to how people perceive the number 13 to be an undesirable number.