Thanks, Nemo! I've never heard of that company but it's good to know buildings can be bought that cheap. They sound easy to erect, too.
While I want my barn to be extremely well built, I might be interested in this company too. The property is big enough for multiple outbuildings, after all.
BTW, I don't know why I didn't think about this sooner, but with the walls being 20 feet high, there's no reason my "storage area" shouldn't be two story. And since I'm now looking at a 50 x 100 barn footprint, that would give me a 3,000 sqft finished living space IN the barn!
Then I suggested to my wife that if we did that, we wouldn't really need a house.
For some reason, she didn't find the idea as amusing as I had.