Why will Best Match use the listing performance score as opposed to recent sales?
The listing performance score will be a more accurate measure of how buyers perceive a listing than recent sales alone because it measures the listing’s recent sales against the number of times it was shown to users. An item that sells with fewer impressions will have a higher performance score than the same item that sells with more impressions. In addition, the more recent your sales and impressions are, the more they will count towards your score. So today’s listing performance counts more than yesterday, and yesterday’s more than the day before.