go to the expense of something/of doing something

go to the expense of (something)

To do something that requires a significant amount of money, especially something unnecessary or done reluctantly. I don't think you should go to the expense of renting a hot air balloon when your girlfriend has said she just wants a quiet Valentine's Day at home.
See also: expense, go, of
Farlex Dictionary of Idioms.

go to the expense of something/of doing something

,

go to a lot of, etc. exˈpense

spend money on something: They went to all the expense of redecorating the house and then they moved.
See also: expense, go, of, something
Farlex Partner Idioms Dictionary
See also:
  • a slew of (something)
  • a slue of (something)
  • a fast talker
  • a horse of another
  • a horse of another color
  • a horse of another colour
  • a/the feel of (something)
  • (I) wouldn't (do something) if I were you
  • a straw will show which way the wind blows
  • a crack at (someone or something)