What is primarily measured by the concept of supply in economics?

The concept of supply in economics primarily refers to the availability of goods. It encompasses the quantity of a good or service that producers are willing and able to offer for sale at various prices over a specific time period. Supply is influenced by various factors, such as production costs, technology, and the number of suppliers in the market, and it directly impacts how much of a product is available to consumers.

Understanding supply is crucial because it interacts with demand, which measures how much of a good consumers want at different price points. While other factors such as the cost of goods and income from goods play important roles in shaping the overall market dynamics, the core idea of supply centers on the producers' readiness to provide products to the market, thus making availability a key aspect of this concept.