— used to describe how much value is received when money is spent钱花得合算
This restaurant offers people the most bang for the buck. [=offers more than other restaurants for the same price]这家餐馆性价比最高。
He claims that the new stadium offers taxpayers too little bang for the buck. [=that the new stadium is not worth the tax money that is being spent on it]他宣称新体育场不值得花纳税人那么多钱