The podcast tells the tale of a mall which straddles the border of two counties. When one county increases their minimum wage, this creates different wages in the Footlocker at one end of the mall than the other.
This is one of those stories I end up referring to over and over again. It's great for natural experiments, minimum wage and minimum prices. When we do our rent caps essay, we often end up discussing regional variations. When we discuss the North-South divide, the notion of regional minimum wages is inevitably floated. The story does a good job of pointing out how price controls ignore crucial nuances.