It cost an arm and a leg
形容某物极其昂贵，付出巨大代价。
用于强调价格过高或付出巨大代价的场合。
英文释义
It was expensive
例句
The new car cost an arm and a leg, but it was worth it.
典故来源
可能源于二战时期士兵为保命愿付高价，或绘画中模特收费按肢体计算。