Would you complain less about cost of food in restaurants/ Cafes if you knew what it cost them to make?

A lot of people believe that ingredients cost less when buying wholesale as a business. Which isn't strictly true. For example the bread we buy for my work is almost $2 more a loaf than the local supermarkets.

Would you complain less about cost of food in restaurants/ Cafes if you knew what it cost them to make?
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