Whenever we have touched on the pricing of productive factors, we have signified the prices of their unit services, i.e., their rents. In order to set aside consideration of the pricing of the factors as "wholes," as embodiments of a series of future unit services, we have been assuming that no businessmen purchase factors (whether land, labor, or capital goods) outright, but only unit services of these factors. This assumption will be continued for the time being. Later on, we shall drop this restrictive assumption and consider the pricing of "whole factors."
