lol mine last time bill around 500 - 600 with
3 PC running 24 hours
4 aircon running 10 hours total horsepower 2.5
1 large fridge
1 heater
for you i think is reasonable as fridge consume power same as aircondition

last time my house use 1-phase power..but power not stable and even burn before..
now change to 3-phase power with extra 2horse power air con ...
btw 3-phase power is easy to *ahem *ahem to lower the consumption compare to 1-phase power...cos 3-phase power is computerized and just need to ahem the software

lol *ahem think i duno...
my parent ask his fren to do it..
and of cos we have to pay for this special services