I don't have a link handy, but I read a study once where Americans were told how things might work for them under socialism and how things might be organized, but the important thing was that they never used words like "communism" or "socialism". When the concepts were divorced entirely from those thoroughly demonized words, a startling number of people were actually in favor of it. Go figure.
I'll take this as option 3, "If presented, a majority would agree"
Well then, What are you worried about? If you but explain how your system is better, then certainly, most people will see the light, and preferentially choose the products produced by the co-op, even if it is a few bucks more (for reference, see how well organic products are doing, simply by adding that one word)