Back last summer, I had a bride to call regarding a "fake" cake. She had been told that she could save lots of $$$ by choosing this option. She tried to read me the riot act when I told her that I charged the same for cakes...real or fake. She didn't like that much, but you know what, it's MY business, MY time, MY energy, and MY name on the line. If you start the whole "cheaper version" of the wedding cake, it's the same as a good referral. The word will spread, and actual wedding cakes (THE bulk of my business) will go to pot.
A letter writing campaign may be in order....I don't remember who suggested that, but it's a great idea!!!