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This article demonstrates how price is used to allocate resources in a free market, in the area of education. Since there aren't enough teachers and universities for every student across the world who wishes to go to university to go, this education must be allocated to people via price. Because of this, only people who can afford the education can go to school. The amount of people who can go to university is also regulated by admissions and marks, but it is an example of where price can affect who gets to make use of the resources.

This article shows how resources are allocated in a free market by pointing out that both the quantity demanded and demand for gasoline fell. The quantity demanded fell because of a higher price; demand is falling because of uncertainty (which pushes the demand curve to the left). This shows allocative efficiency because if fewer people are working it make sense that fewer people are driving because these people no longer have to drive to work. Furthermore, these people may not have the ability to drive as much anymore because of their lower income.

This article discusses the environmental and human health costs of power plants. These type of costs would be considered negative externalities of production, because they are harmful effects that do not effect the firm producing the power, but rather a third party, society as a whole. When producers are making the power, they value the cost as the private costs to their firms, but as outlined by this article, there are many social costs which they do not consider, and this leads to over-production, which means the market is failing, as the resources are not being allocated efficiently. An interesting aspect is that they are able to put a true "cost" on environmental and health effects, which can be quite hard to determine.