To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
$2 for 12 pages? You have got to be kidding me...Total rip off. It should be mandatory to mention the number of pages for any books published. I would buy a ton of these books if they were sold for 0.50 each. For $2 not worth it.