Actress Helen Hayes, who was James "Danno" MacArthur's mom, named their family home in Nyack, New York, "Pretty Penny." Why? Because, she said, the house cost them a pretty penny.
See a picture of "Pretty Penny" and read a bit about it: https://www.lohud.com/story/life/home-garden/2014/02/13/pretty-penny-helen-hayes-former-home-is-on-the-market-again/5462043/, then see if you don't agree that it surely must have cost the MacArthurs a pretty penny.