I also have another bill for $550 for the house that I have been living in.
In this house we had insufficient heating and were running three oil filled heaters, one wall aircon heater, a large tumble dryer, electric cooking etc and the bill was half of the other house!
Don't let it influence you...i think that it's a blip (i hope so!) as the bill for the previous 2 years for the same house were less than half!
It's a shocker alright but maybe just the incentive I need to get the solar system installed and start feeding back into the grid (and my pocket!) during the sunny summer months.