45 year old house.
1000 sq. ft.
Old ass natural gas furnace.
Gas heat, gas water heater, gas stove/range.
Last month my heat was $220 @ 68 degrees.
This month, I bought a digital thermostat($20) and control the heat at 65 while I'm home, and let it cool down to 60 when I'm at work/sleeping. My gas bill this month was $145.

Electric has been around $20-30.