“…Hardie et al [10] developed the notion of reference quality, a parallel concept to the reference price, and empirically demonstrated that the gap between observed quality and reference quality can significantly affect purchase probabilities. It is noteworthy that the reference price research has received widespread attention, such as pricing policies (see, e.g., [11][12][13][14][15][16][17][18][19]), cooperative pricing and inventory (see, e.g., [20][21][22][23]), cooperative pricing and preservation technology investment [24], cooperative advertising [25], and cooperative pricing and advertising [26]. These studies provide efficiency strategies to improve firms' profits by understanding the consumers' reference price effect.…”