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.
Maybe my expectations were too high, but for me it over-promised and under-delivered. If you placed it directly in front of a computer or something, maybe, but if you expect it to cool even the smallest area beyond a few inches in front of the fan, forget it. If it had been $50, maybe I'd have kept it. But at this price, it went back.