Relative price is the price of a commodity such as a good or service in terms of another; ie, the ratio of two prices. A relative price may be expressed in terms of a ratio between any two prices or the ratio between the price of one particular good and a weighted average of all other goods available in the market. A relative price is an opportunity cost. Microeconomics can be seen as the study of how economic agents react to changes in relative prices. In economics and business, the price is the assigned numerical monetary value of a good, service or asset. ... A good in economics is any physical object (natural or man-made) or service that, upon consumption, increases utility, and therefore can be sold at a price in a market. ... This article is about a term used in economics. ... Opportunity cost is a central concept of microeconomics. ... Microeconomics (or price theory) is a branch of economics that studies how individuals, households, and firms make decisions to allocate limited resources,[1] typically in markets where goods or services are being bought and sold. ... In economics, an agent is an element of a model who solves an optimization problem. ...