valley. (building construction). An inside angle formed where two sloping sides intersect. (geography). A generally broad area of flat, low-lying land bordered by higher ground.
In ordinary usage, price is the quantity of payment or compensation given by one party to another in return for goods or services.
Economic value is the maximum amount a consumer is willing to pay for an item in a free market economy or the amount of time an individual will sacrifice waiting to obtain a government-rationed good in a socialist economy. In contrast, market value represents the minimum amount a consumer will pay. Economic value thus often exceeds market value.