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.