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.
The product itself is Pepsi Max, what can I say? It's the best soft drink, period. The actual delivery is VERY quick. I normally buy 4-5 cases at a time so this is far more convenient than buying from Coles or Woolies, plus the price is normally the same if not a little cheaper. This is overall a good buy.