It’s a 600 ft home with electricity at 0.04kWh. As someone who owns a 400 sq ft uninsulated cabin in MN, with rates closer to 4x that, I can tell you it’s about $100/month to heat it with electricity.

I guess, if the math holds, you would be paying around $50/month to heat it in the winter months.

E: changed kW/h to kWh per the nice commenter who suggested as much below.