The optimal price discount, order quantity and minimum quantity in newsvendor model with group purchase

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January 2015, 11(1): 1-11. doi: 10.3934/jimo.2015.11.1

The optimal price discount, order quantity and minimum quantity in newsvendor model with group purchase

1.	Department of Mathematics, Beijing Jiaotong University, Beijing, 100044, China
2.	Department of Mathematics, Beijing Jiaotong University, 100044 Beijing

Received December 2012 Revised February 2014 Published May 2014

Abstract
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Based on the feature of small profits but quick turnover, group-buying, an emerging e-commerce model, benefits both retailers and customers. In this paper, we explore the optimal price discount, order quantity and minimum quantity with a fixed selling price of the product to maximize the sellers' profit. The traditional newsvendor model framework is used in view of the shortened life cycle of most products. The demand of customers is assumed to be in addition form and product form, respectively, and the impacts of demand parameters are examined numerically. It is revealed that in some cases the profit cannot be improved significantly through price discount because of unconspicuous increase in demand. However, when the demand changes obviously with price discount, group-buying can bring more profit through price discount and inspire vendors to order more goods. Through numerical results, it is shown that the influence of demand in the product form is more evident than that in the addition form under the strategy of group-buying. Furthermore, the profit-based minimum quantity and the probability of selling nothing during the group time are also shown in this paper.

Keywords: minimum quantity., group buying, price discount, optimization, order quantity, Newsvendor model.

Mathematics Subject Classification: Primary: 90B05; Secondary: 90B5.

Citation: Zhenwei Luo, Jinting Wang. The optimal price discount, order quantity and minimum quantity in newsvendor model with group purchase. Journal of Industrial & Management Optimization, 2015, 11 (1) : 1-11. doi: 10.3934/jimo.2015.11.1

References:

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[14]	H. P. Marvel and H. Yang, Group purchasing, nonlinear tariffs and oligopoly,, Int. J. Ind. Organ., 26 (2008), 1090. doi: 10.1016/j.ijindorg.2007.10.002. Google Scholar
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[16]	Y. Zhou and S. Wang, Inventory Control: Theory and Methodology,, Beijing: Science Press, (2008). Google Scholar

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References:

[1]	S. K. Anand and R. Aron, Group buying on the Web: A comparison of price-discovery mechanisms,, Management Sci., 49 (2003), 1546. Google Scholar
[2]	Y. K. Che and I. Gale, Buyer alliances and managed competition,, Journal of Economics & Management Strategy, 6 (1997), 175. Google Scholar
[3]	F. Y. Chen, J. Chen and Y. B. Xiao, Optimal control of selling channels for an online retailer with cost-per-click payments and seasonal products,, Production Oper. Management, 16 (2007), 292. doi: 10.1111/j.1937-5956.2007.tb00260.x. Google Scholar
[4]	R. R. Chen and P. Roma, Group buying of competing retailers,, Production Oper. Management, 20 (2011), 181. doi: 10.1111/j.1937-5956.2010.01173.x. Google Scholar
[5]	Y. Chen and X. Li, Group Buying Commitment and Sellers' Competitive Advantage,, Working paper, (2011). Google Scholar
[6]	T. Chipty, Horizontal integration for bargaining power: Evidence from the cable television industry,, J. Econ. Manage. Strategy, 4 (1995), 375. doi: 10.1111/j.1430-9134.1995.00375.x. Google Scholar
[7]	J. Dana, Buyer groups as strategic commitment,, Games and Economic Behavior, 74 (2012), 470. doi: 10.1016/j.geb.2011.08.014. Google Scholar
[8]	R. J. Dolan, Quantity discounts: Managerial issues and research opportunities,, Marketing Sci., 6 (1987), 1. doi: 10.1287/mksc.6.1.1. Google Scholar
[9]	Q. Hu, L. B. Schwarz and N. A. Uhan, The impact of GPOs on healthcare-product supply chains,, Manufacturing & Service Operations Management, 14 (2012), 7. Google Scholar
[10]	R. Inderst and C. Wey, Bargaining, mergers, and technology choice in bilaterally oligopolistic industries,, RAND J. Econ., 34 (2003), 1. Google Scholar
[11]	X. Jing and J. Xie, Group buying: A new mechanism for selling through social interactions,, Management Science, 57 (2011), 1354. doi: 10.1287/mnsc.1110.1366. Google Scholar
[12]	R. J. Kauffman and B. Wang, New buyers' arrival under dynamic pricing market microstructure: The scenario of group-buying discounts on the Internet,, In Proceedings of the 34th Hawaii International Conference on System Sciences, (2001). Google Scholar
[13]	A. H. Lau and H. S. Lau, The Newsboy problem with price-dependent demand distribution,, IIE Transactions, 20 (1988), 168. doi: 10.1080/07408178808966166. Google Scholar
[14]	H. P. Marvel and H. Yang, Group purchasing, nonlinear tariffs and oligopoly,, Int. J. Ind. Organ., 26 (2008), 1090. doi: 10.1016/j.ijindorg.2007.10.002. Google Scholar
[15]	N. C. Petruzzi and M. Dada, Pricing and the newsvendor problem: A review with extensions,, Operations Research, 47 (1999), 183. doi: 10.1287/opre.47.2.183. Google Scholar
[16]	Y. Zhou and S. Wang, Inventory Control: Theory and Methodology,, Beijing: Science Press, (2008). Google Scholar

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