Consumer Surplus is an economic measurement of consumer benefits. A consumer surplus happens when the price that consumers pay for a product or service is less than the price they would be willing to pay.Consumer surplus is an economic measurement of consumer benefits. A consumer surplus happens when the price that consumers pay for a product or service is less than the price they would be willing to pay. It's like getting something free, but better!For example, when you go to a movie theatre and pay $10 for a ticket, the consumer surplus is $8. That's the difference between what you paid and what it was worth to you.Consumer surplus is the difference between what a consumer pays for a good or service, and the maximum price that consumer would be willing to pay. It is one of several possible economic surplus concepts.