A commodity will be demanded only if it has utility. This means that a good or service must be able to satisfy a consumer's want or need in order for it to be demanded in the market. Even if a commodity is affordable, has no close substitutes, or consumers have high income levels, it will not be demanded if it does not provide any utility. Utility refers to the satisfaction or benefit a consumer receives from consuming a good or service, and it is the fundamental reason why consumers are willing to pay a price for a commodity.