I found there's
a free demo for CiM1. It's not on Steam, so I'm not sure I'll make the effort to download and install it manually. I don't know if I even remember how to do that
Anyway, worth checking out. CiM2 won't be out for another half a year, and I think it won't be much cheaper than Simcity (at least: by then...). And EU4 will be out as well, so I seriously doubt I'll have any spare time left to play CiM2 or feed the baby.