225 ILCS 470/25
In addition to the declarations required by Section 24 of this Act, any commodity in package form, the package being one of a lot containing random weights, measures or counts of the same commodity shall bear the total selling price of the package and shall bear on the outside of the package a plain and conspicuous declaration of the price per single unit of weight, measure or count.
(from Ch. 147, par. 125)
(Source: P.A. 86-314.)