The benefit that arises from a one-unit increase in an activity. The marginal benefit of something is measured by what you are willing to give up to get one more unit of it. (p. 15)
the additional benefit (e.g., in units of health outcome) produced by an additional resource use (e.g., another health care intervention).
The increase in total benefit that is the result of a one unit increase in the production of a good.
Marginal benefit is the benefit a person receives from consuming one more unit of a good or service. It is measured as the maximum amount that a person is willing to pay for one more unit of the good or service.