To calculate the overall star rating and percentage breakdown by star, we do not use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
Felt slightly cheated at the name being 'Heart Box' - it is just a heart-shaped window in a cardboard box. The pieces inside come in about 5-6 separate plastic packets (non-sealable/reusable). The cardboard box is also non-sealable/reusable. So basically, there is no 'heart box' that can be used to store the pieces after that. You'll have to get your own separate storage. Other than that, the pieces are nice and colourful.