Map of italy train routes for D. STATE UNIVERSITY OF NEW YORK, NEW PALTZ profit IN SIMPLE TERMS, PROFIT REPRESENTS the residual return to a firm or entrepreneur, or the difference between the revenue generated by the sale of goods and services and the total costs of production. The total costs include the full opportunity costs of the factors used in production of the output plus the premium charged for the risk taking and the costs of using the owner’s CAPITAL. Economists make a distinction between two types of profit. Normal profit is the minimum amount necessary to induce a firm or entrepreneur to remain in business. Essentially, normal profit equals the opportunity costs of the entrepreneur, which in turn implies a zero level of economic or super-normal profit. Accordingly, supernormal profit or economic profit is any profit over and above normal profit. Map of italy train routes 2016.