The answer is why not ??
Anyway, all of the customers paying rent here, are for 4' x 8's, 4' x 4's, posts and some sled stands. They each pay us I think it's $145 a month for this service. It used to be $115, but we went up January of 2012 and no one balked.
The guy with the trade show doesn't have any displays such as you're thinking. It's all 2' x 3' signs.... and lots of them, 2' x 2' signs, some boxes of paper, about 90 or 100 metal stands about 10' long and a few miscellaneous boxes of junk. This guy hosts a science show every year and we store the basics like way finding signs, sectional signs and lotsa signs with logos. We just drop them off. We're not union, so we can't erect anything on the floor, just unload our trucks on the floor.