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.
Delivery and product was good. Material also good as per my expectation. One thing is that colour of the dress is highly different from picture (so dark as compare to pic), but i like it more than original product shown in pic. One thing to say that price is slightly higher for this dress... It should be 800-850/- for fair market.