I did the calculations once and I think I worked out something like if the the price of wheat doubled it would add about 10c to the price of a loaf of bread.
You are basically price takers and as long as science and your efficiencies and hard work can make production greater than consumption that will be the case.
Looks like you are entrepreneurial and I commend you and hope you do well. Loving what you do is far more important that anything else so all the best.
