I don’t know about grocery stores in your area, but I can easily find egg cartons with 2-3x price differences sitting next to each other in my city. Most people

I don’t know about grocery stores in your area, but I can easily find egg cartons with 2-3x price differences sitting next to each other in my city. Most people (the median) buy the cheapest. But the average cost of sale is slightly higher since a fraction are willing to pay much more.