As a new home-owner, my bills are better than most. I'm on well water, so when water comes out of the faucet, it's less than a penny. Like virtually everyone, I do have to worry about how much the power one is going to be. I try to leave AC off, and rely on fans most of the time. We use this box fan in the living room.
But it did very little while sleeping as our bed is raised so far up. So I got nice standing fan by Lasko which sends air above us instead of mostly on the ground level. Summer nights aren't bad with this and the ceiling fan on.