Since Roy is willing to pay $2.50 for a sports drink, but since the price has increased to $2.75, his consumer surplus would be $0.
Consumer surplus is an economic measure of the benefits that consumers receive as a result of market competition. When the price that consumers pay for a product or service is less than the price that they are willing to pay, this is referred to as a consumer surplus. It is a measure of the additional benefit that consumers receive as a result of paying less than they were willing to pay for something. Consumer surplus and producer surplus can be compared.
Consumer surplus rises when the price of a good falls and falls when the price of a good rises. Economists visualize it as the triangular area under the demand curve between the market price and what consumers are willing to pay.
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