The document discusses the price mechanism, which refers to how prices of goods and services affect their demand and supply. The price mechanism influences both buyers and sellers as they negotiate prices. It allocates scarce resources efficiently through market signals and incentives, rationing supply when demand is high. When demand increases, prices rise, causing movement along the supply curve. As an example, the 1970s oil crisis caused oil prices to spike, incentivizing more nations to produce their own oil and shifting the supply curve rightward over the long term.