Amazon calculates a product’s star ratings using a machine learned model instead of a raw data average. The machine learned model takes into account factors including: the age of a review, helpfulness votes by customers and whether the reviews are from verified purchases.
I bought these as replacement to several chopping boards I already had, more for aesthetic reasons due to the new boards being compact and neat. They are sitting well and take minimal room on the counter top. I gave them a 4* rating as the quality is not exceptional for the price, as the boards cut marked easily after one use. They are light weight and sit on the bench top evenly and stay put due to the small rubber corners.