Apple Certification Exam 9L0-509

In many cases, the costs borne by the individuals involved are the only costs. The choice to purchase a glass of lemonade at a lemonade stand has little consequence for anyone other 9L0 509 than the seller or the buyer. The costs of this transaction includes the lemons, the sugar, the water, the opportunity cost of the labor, and any transaction costs, such as walking to the stand.

Since these two individuals are involved in the economic transaction and are the only ones involved in 9L0 402 the transaction, all the costs and benefits can be said to be "internal" to the economic transaction. In this case, the social cost is the same as the private cost.