Purchasing for health, which includes what, how, and from whom services are purchased, was one of the policy levers available to countries as part of their health systems' response to the COVID-19 pandemic. Ideally, the purchasing function should align with the broader health financing...

In practice, it is common, especially for online retailers, to bundle different products together during procurement to save transportation and handling costs. It is important to understand and theorize how to manage dynamic procurement by taking advantage of joint ordering in the presence of...