A 4-star Amazon store is a store on Amazon.com that has been rated 4 stars out of 5 by Amazon shoppers. 4-star stores must meet certain criteria in order to be eligible for the 4-star rating, including exceptional customer service, a high number of positive customer reviews, and customer feedback rating of 4 stars or above. 4-star stores are considered to be among the best of the best on Amazon, and offer shoppers a great experience.