RWatts, aside from quite an apt name for such a discussion! Your lucky to be able to pay for it with Amex firstly,and secondly - can we swap power bills... lol
I pay around that for a week not a month! Mind you the main thing is that Global Warming doesnt happen in our neighbourhood apparently, its all about comfort according to MrsGurio.
Anywho, we are like StevePER here in Tassie, The only option we ahve where we live is Aurora who have this cool Pay-as-you-go thingie where you just top up the power like some do their phone. Its the best thing for self employed people who dont get paid every week, and you can tell exactly what costs how much to run. For instance we had a wall heater i put in late one Sunday night (Don't ask!) and we found out it costs us around a $1.50 a day to run. Interesting setup for me who likes to see how things work!