When the sales agency has established and clearly disclosed a no- repricing policy, whereby items on display are not repriced to reflect a higher price, the applicable unit price stamps, tags, labels, signs, or lists shall display the unit price of the higher price. When the manufacturer of a consumer commodity has offered a discount or cents off the price of items offered for sale by a sales agency, the unit price stamps, tags, labels, signs, or lists shall display the higher price.