“…Later studies (e.g. Wisniewski and Blattberg, 1983; Stiving and Winer, 1997; Fengler and Winter, 2001; Herrmann and Moeser, 2006; Baumgartner and Steiner, 2007; Levy et al , 2011; Macé, 2012; Schroeder et al , 2016) show that nine-ending prices continue to be widespread in food retail, making up between 50% and more than 90% of all food prices. In other, non-food retail sectors, between 20 and 65% of all prices end in the digit 9 (Holdershaw et al , 1997; Schindler and Kirby, 1997; Stiving and Winer, 1997; Schindler, 2006).…”