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 purchased 2 of these polo shirts from my MIL. They came quickly and in good condition BUT they are DIFFERENT. She liked the first one so I hit the "Buy it again" button to get her another. It came and was made from different fabric and had different buttons. Consistency would be good!