Supply and demand
Supply and demand is a basic principle of any market or economy anywhere. The basic understanding is this, certain goods or services may be in a "high" or "low" demand, while also being in a "high" or "low" supply. These factors help to greatly influence the value of these goods and services. Understanding this concept is a foundation to making more money in any economy or market.
Supply is the measure of how much the Quantity of a good or service exists in a given Local Economy. High quantity mean there is high supply and low quantity is low supply. Generally, high supply drives prices down while low supply drives prices up.
Demand is the sense of desire that a given Local Economy has for a particular good or service. The more the population "wants" the good or service the higher the demand. Demand may rise due to a large population desiring the good or service, or even a small group desiring large quantities of the good or service. In general, the higher the demand the higher the prices, and the lower the demand, the lower the prices.
After understanding Supply and Demand, a general correlation can be drawn, represented by this table below.
Generally the price given is the result of the Demand and Supply on the same row.