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.
you can buy a lot of perfume for this price. I dont know if this is a genuine product. I am using it for the first time and i think this is only lasting for a very few hours. No way i could authenticate the product.. quite risky to buy perfume from online.