Based on the quantity of women who are in a town, how desirable each is to each man in that town. If there is only one
woman in town, as long as she is not
ugly or old, she
will attract the
men and be desired. The moment other women are in town, each man finds himself comparing them to decide which one he likes more and get her to want him.
Based on the quantity of a specific thing or things, such as fruits, shoes, whatever, are available in a town, how desirable each is to people varies depending on how many they have to choose from.