“…The current study focuses on the existing literature exploring unit pricing of multiple brand sizes. Most of these studies were field studies aimed to measure the rate of occurrence of QS in several product categories sold in supermarkets (Agrawal et al, 1993;Cude and Walker, 1984;Dunphy, 2016;Gerstner and Hess, 1987;Gupta and Rominger, 1996;Manning et al, 1998;McGoldrick and Marks, 1985;Nason and Della Bitta, 1983;Palla et al, 2010;Sprott et al, 2003;Walker and Cude, 1984;Widrick, 1979aWidrick, , 1979bZotos and Lysonski, 1993). The average QS incidence rate reported by these studies varied widely among product categories: e.g.…”