penny wise and pound foolish
01
小钱精打细算，大钱随手乱花, 省小钱吃大亏
used to describe someone who is extra careful about spending little amounts of money but has no problem with spending large amounts
idiom
informal
例子
Last year, they opted for a cheaper construction company, but the building required expensive repairs later. They were penny wise and pound foolish.
买鞋时，她小钱精打细算，大钱却随手乱花。
