We consider a variation of the economic order quantity (EOQ) model where cumulative holding cost is a nonlinear function of time. This problem has been studied by Weiss (1982), and we here show how it is an approximation of the optimal order quantity for perishable goods, such as milk, and...

Online retailers tend to outsource their trade-in programs to third-party trade-in managers, who acquire and resell products in the secondary market. Motivated by such practice, we analyze, both analytically and empirically, how the introduction of trade-in programs impacts new and used product...