Please note that the sums on the power bill are probably Belize dollars, not US or Canadian.
My monthly bill covers use from two houses always occupied, a guest house sometimes occupied and a swimming pool (pool pump, no heater). My bill averages 400 Bz a month during winter and a bit more in the summer. The bill was substantially higher before I installed a solar hot water heater. I occasionally run the AC, but not daily. Finding a home with good cross ventilation helps reduce your power consumption.