Money idioms

very expensive
Example: That phone costs an arm and a leg.

pay too much for something
Example: We paid through the nose for drinks there.

have just enough money for basic needs
Example: A lot of people are living from hand to mouth.

do what you say you believe in
Example: If you think the idea will work, put your money where your mouth is.

when you want to spend money quickly
Example: That birthday money is burning a hole in his pocket.

be very rich
Example: He must be rolling in money if he bought that house.