I was able to locate cheap steel garage kits at a couple of websites. Those websites specialized in steel building that were made to certain specifications that fir the most common usages of this type of building. The two main uses for these steel buildings were for car garages and gardening storage sheds.
But the steel garage kits that I saw could be used for other things, as well, such as an add-on apartment for guests that want to stay overnight at your house. This could come in handy when you have a large party with guests from out of town and they don’t want to dive home after they have been consuming alcohol that evening.