How much a storage shed should cost. average costs and comments from costhelper's team of professional journalists and community of users. $100-$750 will get you a. We are the largest shed and gazebo plan database. all types of shed plans, jungle gym plans, swing set plans, custom made professional quality wood plans. Build a small and simple home, cabin, cottage, barn, stable, garage, shed or backyard project with the help of these blueprints, manufactured buildings, do-it.