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.
It worked out perfectly. No errors no trouble. After the successful installation of the first set of cartridges, I ordered one more for stock. Seller is doing excellent work. I wish him good luck & success.