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.
Price can be understood as the money or amount to be paid, in order to get something. Cost is the amount incurred in the production of goods, i.e. it is the money value of the resources involved in producing something. Conversely, value implies the utility of worth of the commodity of service for an individual.