My bill for November was $88.85 with a usage of 605 KwHR. That would have been higher, probably closer to 900-1000 KwHr, had I been using the heat pump.
I'm on budget billing, which smooths out the bill to the same amount every month, which right now is $108.99. I should be able to cut that quite a bit by not using the heat pump.
My lowest bill over the last year was 508 KwHR in April, but I was away for 2 weeks of that billing period. It would have been even lower had I turned my water heater either to vacation mode or completely off. I didn't realize I was going to be away that long, so I didn't.
This weekend I'm going to go through the house and kill all of the 'phantom' power draws that I can; things like the TV in the basement, the clock radios in rooms I don't use that much, etc., the computer in my office, which I only use on weekends, etc. Between those and the fan on the air handler, I'm thinking I might be able to drop another 50-100 KwHr off my usage.
That's going to be a 1 or 2 month experiment. We'll see how it works out.