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.
The quality of the blades is very poor. The first blade broke in a couple seconds while attempting to cut a thin piece of wood. The "storage case" is some poorly cut piece of plastic and is more for shipping than storage.