Joint Surplus Definition

Condition for Potential Surplus from Trade

Joel Waldfogel

Borrowing and Lending as a Source of Mutual Gain

Analyzing a Simple Transaction

Which of the following statements provides the most accurate and fundamental explanation for why two parties willingly engage in a voluntary exchange?

If two individuals agree to a voluntary trade, it logically follows that both of them must end up in a better position than they were in before the transaction took place.

Explaining the Motivation for Trade

The Rationale Behind a Simple Transaction

The primary motivation for two parties to voluntarily engage in a transaction is the prospect of achieving ______, which represents the net benefits they each receive compared to not trading at all.

A potential buyer is willing to pay a maximum of $80 for a concert ticket. A potential seller values the same ticket at $60, meaning they would sell it for any amount equal to or greater than $60. Considering only these two individuals, in which of the following situations are the potential gains from exchange NOT realized?

Calculating Benefits from a Voluntary Transaction

A student is willing to sell their used textbook for any price of $40 or more. Another student is willing to buy that same textbook for any price up to $90. If they agree on a price of $70, which of the following statements accurately describes the outcome of this transaction?

Relationship Between Economic Rent, Joint Surplus, and Gains from Trade

Economic Rent