wood is cheaper than red iron. Wood is not cheaper than the metal carports. I had a metal carport installed for maintenance ease, and longevity. Not necessarily price, but it was a nice bonus that it was cheaper than a wood structure. Why do you bunch of sissys need concrete slabs ??? My boat trailer is setting on a nice limestone gravel pad, and it doesn't seem to mind. Cost about 200.00 in limestone for a 20x26.