Manasota Key, FL Sheds, Carports, Garages and accessory dwelling Units for Sale Sheds for sale in Manasota Key, FL have an average price of $6241.75 with an average square footage of 212. The average cost per square foot is $29.44. ShedHub.com is aware of 1 dealers within 20 miles of Manasota Key FL. The most popular shed styles at these locations are High Barns, Mini Barns, and Garages.