in all honesty scol unless you need/want to freeze items a cooler is a far more viable investment! provided the items you put in it are cold and you run it for a few hours before filling it up they work excellently!.
We used to use an esky for drinks and the cooler for food. because we werent in and out of the cooler all the time every thing stayed cool and best of all... DRY!
Infact in some ways I think they are better than fridges as i find sometimes my food still gets that "damp" feeling in the fridge.
Plus I havent quite mastered it (my CF-80) yet and I keep freezing beers in the FRIDGE section!