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 analyzes reviews to verify trustworthiness.
These highlighters came quicker than expected and so far I have only used up the ink in one of them. It is hard to gauge longevity on a tool that is used so many times, both day and night on papers and lesson plans. I love them and I loved the price. Thank goodness for Amazon Prime and a great supplier!