hey sosman,
they charged me $43 plus GST, which in my books is still a bargain. very easy to install guys, just use the 2 AC wires (live/neautral) to connect to NC/CO. BEWARE we are talking 240 Volts and it can be quite the heart starter (or stopper). Never having seen a normal thermostat before i was a little confused with the 2 white wires on the fridge thermo. I soon realised what i didn't need and just went for the power. Make sure your connection leads are nowhere near the metallic casing which is quite poorly designed as it is right next to the power terminals. Any stray wires on your terminals could touch the casing and short. So make sure you do a neat job and run wires to the inner side of the terminal. On my fridge, the thermostat was located just inside the door where the light is mounted (westinghouse), so it was very easy to get to. i just unscrewed the cover, and there was the thermostat with earth, live, neautral, and 2xwhite/black wires for the thermostat.