Final answer:
An exchange where one seeks the best return for the least investment pertains to concepts like arbitrage and speculation, and is typical of transactions in a capitalist economy.
Step-by-step explanation:
The exchange in which one tries to get something for nothing, or at least the best possible return for the least possible investment, pertains to different concepts such as arbitrage, speculation, and the fundamental principle underlying capitalism. Arbitrage involves the process of buying and selling of goods or currencies across borders at a profit, incentivized by the aim to exploit the price differences in different markets. Speculation is the practice of investing in financial opportunities that are considered risky with the hope of achieving a significant payout due to market changes. In a capitalist economy, transactions are commonly made through market exchanges where goods and services are bought and sold and where self-interest often drives individuals to seek the most advantageous deal for themselves, sometimes characterized as trying to get 'something for nothing.'