Definition
to be very expensive for someone.
花费不费
They spent a pretty penny renovating their house.
他们花了一大笔钱装修房子。
That new car must have cost him a pretty penny.
那辆新车肯定让他花了一大笔钱。
Staying one night at that luxury hotel will cost you a pretty penny.
在那家豪华酒店住一晚会让你花一大笔钱。