Avondale, MO Sheds, Carports, Garages and accessory dwelling Units for Sale Sheds for sale in Avondale, MO have an average price of $5245.10 with an average square footage of 108. The average cost per square foot is $48.57. ShedHub.com is aware of 1 dealers within 20 miles of Avondale MO. The most popular shed styles at these locations are High Barns, Mini Barns, and Garages.