Gas Prices? Chicken Prices?

Brandon Hansen, the OmniNerd, has a rather technical article suggesting that shopping around for better gasoline prices is a relatively poor way to save money. He suspects that we hurt for better gas prices because gasoline pricing is so "in your face." But shopping for cheaper food, produce and drugs will save more money with less effort. Okay, let's imagine that as we drive around, we see gigantic signs advertizing: "Chicken, $0.699/pound".