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.
This product looks fantastic. Bought as a christmas present for my goddaughter. There is so much choice of materials to use that I'm sure she's going to be very creative with the outfits she designs and have lots of fun doing so.