Price busters.

The article reports on the violation of the city law by Plum cafes in the academic buildings of the University of Chicago, Chicago, Illinois. The prices of the food items of the cafes that are mostly carry-out snack bars are listed on a board. It is a violation of the city law. Under the city law, an establishment that sells pre-packaged food items must either use a city-certified scanner to read the price from a printed bar code or place a price sticker on each and every item.