To calculate the overall star rating and percentage breakdown by star, we don’t 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.
Product arrived in time and is as expected. Seemed to be very similar if not identical to the official Breville one we already had. I don't know how you check whether they are as effective as each other but they seem fine.
I’m not sure how to judge the effectiveness of the filters but they look very close to the originals and haven’t noticed a change in quality of the coffee or function of the machine since I replaced the filter.