exorbitant

As a noun bargain

is an agreement between parties concerning the sale of property; or a contract by which one party binds himself to transfer the right to some property for a consideration, and the other party binds himself to receive the property and pay the consideration.

As a verb bargain

is to make a bargain; to make a contract for the exchange of property or services; to negotiate; -- followed by with and for; as, to bargain with a farmer for a cow.

As an adjective exorbitant is

exceeding proper limits; extravagant; excessive or unduly high.