cost a pretty penny

cost a pretty penny

 and cost an arm and a leg; cost the earth
Fig. to be expensive; to cost a lot of money. Mary's dress is real silk. It must have cost a pretty penny. Taking care of a fancy car like that can cost a pretty penny, let me tell you. It cost an arm and a leg, so I didn't buy it. A house that size with an ocean view must cost the earth!
See also: cost, penny, pretty

cost (somebody) a pretty penny

to be very expensive That diamond ring must have cost him a pretty penny.
See also: cost, penny, pretty
References in classic literature ?
Nevertheless," I said, "this room must have cost a pretty penny.
First and last, this wedding would cost a pretty penny.
Tulliver, "for everything's as nice as can be all over the house, and that watered silk she had on cost a pretty penny.
Hayes said its name came from remark of a friend: ``This place must have cost a pretty penny.
Guerra added that, although these employee perks could cost a pretty penny, NCCI has been able to implement them at relatively low cost to the company through a creative partnership with the YMCA of Boca Raton.