The drive to Ararimu and back (83km) cost me about $2.86 worth (13KW at $0.22/Kw) of electricity at home. The LEAF is really, *REALLY* cheap to run.
I really hope that's not the rate you are paying to recharge your car. Look at Flick or at least the day / night plans and charge overnight. Down here in Wellington, the local line company will even increase the night hours for owners of electric cars so that you are paying a cheaper rate for longer.