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.
Great to build, and the kids love it when finished, but pay attention to the instructions, some of the little arrows are quite hard to see and going back to adjust can be tricky! Great product though, passed the time for a week of after-work isolation!