For my new car - A Garage!

Has anyone seen these prefab garages that are being offered lately? Some are basically PVC pipe with a tarp for a canopy and others are all out, full metal building. I am wondering what people have to say about these. Unfortunately, even though my budget prefers the PVC version, my canyons winds dictate the need for the full metal type. They do seem sturdy and claim to be resistant to the elements. Who knows, maybe I will like it so much that I will decide to buy 5 more, one for each of my children to sleep in... haha.... dreams!