costs an arm and a leg
价格太贵，花费太多的钱
口语·表示价格极其昂贵
英文释义
to be extremely expensive
例句
A college education these days costs an arm and a leg, but it's worth the investment.
典故来源
与cost an arm and a leg同源，强调极端昂贵，常用于形容商品或服务价格。