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 brought this as part of a gift. I think the price was reasonable, and I would purchase again. My only complaint would be that the title says gigantic, when it is only an A4 book. It does say that in the title, but if you don’t pay much attention (like me), it can be slightly confusing when the product arrives.