Exactly my point. Seems like the cost of housing goes drastically down the more animals you acquire to split the cost of your chosen setup. Especially if you're a DIYer, the cost goes down even more.
And to explore that a little more, if I was a bettin' lady, I would definitely bet that the big breeders out there with 1000+ animals spend far less than $25 per animal for housing, especially with turn over and reuse of housing for new animals. Say, for instance, you're breeding and have a clutch of babes, sell all of them and then have another batch next season. Would you divide the cost twice because two animals occupied it once? I would imagine that's pretty important when determining actual cost of housing too.