Retailers use price promotion of light and regular products, but not all of these products are perceived as relative virtues and vices, respectively. This paper aims to identify whether consumers distinguish between the two product categories. Survey data is used to distinguish between each product category, and identifies low-fat milk as a light product that gives both immediate and delayed rewards. Daily scanner data from a hypermarket supports the effects of price promotions on sales within and between product categories, as expected. We expect that, (1) due to these light products representing more enduring involvement, demand is less price sensitive compared to demand for regular products; (2) as nonimpulse purchase products, price promotions of light products cannibalize the sales of other light products; and (3) the loss of light product benefits associated with switching means that price promotions of light products hurt regular product sales more than vice versa.