[c22]

When I was in college I had a pretty sweet house-sitting gig with a guy who was out of town for a lot of the year operating commercial research vessels. He paid me $250/month to watch the place while he was gone, take care of his dog, water the plants, etc. When he was in town I paid $250/mo to rent my room, but since most years he was gone for 5-8 months my net cost was <$0.