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.
I thoroughly enjoyed the first Dragon Rider book so immediately bought this second book only ti discover that it was in fact the same as the first book!! I am hoping that it won't be much longer before they get it sorted out and indeed that they will let me know when it is the correct book!