Note—On “A Quantity Discount Pricing Model to Increase Vendor Profits”
指出Monahan的数量折扣模型仅适用于卖方从其他供应商采购的情形，通过加入卖方库存持有成本，推广了该模型，并证明其与Banerjee的联合经济批量模型等价。
Monahan (Monahan, James P. 1984. A quantity discount pricing model to increase vendor profits. Management Sci. 30 (June) 720–726.) develops a model for establishing an optimal quantity discount schedule from a vendor's viewpoint. In this note we show that this model is limited to the case where the vendor buys from another supplier. Incorporating vendor's inventory carrying costs, we develop a generalized version of Monahan's model and demonstrate its equivalence with the joint economic lot size approach suggested by Banerjee (Banerjee, Avijit. 1986. A joint economic lot size model for purchaser and vendor. Decision Sci. 17 (Summer) 292–311.).