That is why days on market ( fact ) and marketing time ( list time estimated to get a price ) are different concepts than market exposure, which is an opinion of estimated time to achieve a market value equivalent price.
Real buyers and sellers are under no obligation to buy, sell, or list at "market value". Appraisers on the other hand, are tasked with opinions of market value (from the real prices and activity) An appraisal of MV is a model of value, and not expected to be literal - some appraisers fail to understand that, imo. It is frustrating of course to RE agents, who see a buyer willing to pay a price, and simply can not understand why since a buyer is willing to pay it, why can't it just appraise for that ( well, in a waiver, it does ! )