There are three convenience stores in the student area west of the University of Texas campus. Store A sells the most beer, and barely looks at student IDs; but it also charges the highest price of the three. Store B is a bit stricter on fake IDs, refuses some underage students, and charges a lower price. Store C has the best prices, but its clerks inspect IDs thoroughly. My student reports that nobody makes it through with a fake ID. This near-campus oligopoly defines a new pricing strategy: lenience on IDs that is unsurprisingly related to the stores’ pricing policies. I wonder about differences in the characteristics of the patrons of the different stores.