Salem, PA Sheds, Carports, Garages and accessory dwelling Units for Sale Sheds for sale in Salem, PA have an average price of $4869.50 with an average square footage of 140. The average cost per square foot is $34.78. ShedHub.com is aware of 1 dealers within 20 miles of Salem PA. The most popular shed styles at these locations are High Barns, Mini Barns, and Garages.