The demand for a commodity is essentially consumers attitude & reaction towards that commodity.

This demand in economics is the combination of the following 3 things:

1. Desire to purchase
2. Ability to pay
3. Willingness to pay

Determinants of Demand

a. Tastes
b. Number of Buyers

c. Income
d. Normal (Superior) & Inferior Goods

e. Prices of Related Goods
f. Substitutes & Complements

g. Unrelated Goods
h. Expectations