I can agree with some here, as I was, at one point, going to purchase a block at Temora and put up a Hangar. When I got the quote back from the shed guys, I nearly fainted. They wanted more than $120,000 for the Hangar alone. SO... I called another shed mob and asked for a quote on the EXACT same size "shed" for my "property" It was half the price - for the same thing.
I think it's like weddings. As you as you mention the word Wedding, the flowers double in price! LOL!
I now rent hangar space in a very nice hangar in southern NSW. Great AD, and the hangar I am in is large and very comfortable. Shower, toilet, and even an office space if I want to use it. For what I pay for it, I think it's pretty good value to keep my bird out of the elements, and somewhere to work on her when I need to. I share it with another aircraft, but it's large enough to house both of us, without having to move aircraft to get out - the other is a Bonanza!
Would I buy one as an investment - Maybe - If I was to put my own bird in it, and maybe lease some space out to someone else. You can always sell in the future, and you have to put a value on it being yours to do with as you wish.