expression, godan verb (-ku)
spend a fortune; pay a high price
Idiomatic expression for spending a large sum of money, often with a sense of reluctance or that the amount is significant.
彼は新車に大枚をはたいた。
He spent a fortune on a new car.
この絵を手に入れるために大枚をはたいたよ。
I paid a high price to get this painting.