How was the Main Line real estate market in January? The average and median sales price were flat at 0.6% and 3.4%, compared to last January. The average price last month was $836K and the median was $657K. Low inventory continues to be issue on the Main Line, as it is in our surrounding areas. There were 22% less listings in January and 18% less sales (87 listings and 92 sales). The total sales volume of 76.4 million was down 18.3%. The days on market was unchanged at 36 days.