Your site looks nice, is neat, tidy and has the typical sales blurb with testimonial that we have all become accustomed to. I like it's appearance, but what you really need is a copywriting review from someone who is superb at sales copy.
What you could improve is the denomination of currency which shows the cost of your publication, but doesn't tell us whether it's in US, AUS, NZ, Euro, or Swahili pinkies. Best practice ... at least in Australia ... suggests that clients should be aware of the currency involved in a transaction before they commence the transaction.
Fortunately, I have one of those fine tuned bodies that stays reasonably good so I don't need a copy of your title unless you'd like me to do a review of the communication style, layout, overall design etc in which case you could email me a copy.
Best of success
Desert Wave Enterprises
Alice Springs, Central Australia