Amazon calculates a product’s star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers, and factors that establish reviewer trustworthiness.
It came with some dents from shipping, though the replacement was better. I assume this one will not rust out but have to see after a few years. Stainless should not rust out for a very long time. I feel this was a good purchase since my old car sits and goes short distances.