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.
Good product at this price range. The pore openings are thicker than normal faucets which result in less water pressure, but overall a nice product. The fitting of this product is good too. The deal on Amazon lets their customers purchase this at a much much lower price from local stores.