This paper considers the problem of determining the optimal ordering quantities of a purchased item where there are step changes in price, either up or down. Other costs incurred include ordering costs associated with each replenishment and holding costs related to capital tied up in inventory...

The Newsboy (Newsvendor) problem is probably the simplest of all stochastic inventory problems, involving a one-time purchase decision and a stochastic sales outcome. As an investment, it can be interpreted as the simplest stochastic version of the point-in, point-out investment problem of...