How much should I charge for this cake? Only the bottom cake is real . 12" round, the other tiers are stirofom[postimage id="3436" thumb="900"]

I'd charge 100% of the normal price for the 12", and 80% of the normal price for the other tiers. It takes as long and as much material to decorate styrofoam as it does a real cake.

All you saved by using styro instead of real cake was about an hour of your time it would have taken to make up the batter & bake it  so I definitely agree w/soctumeczar