介绍：

Cost-effective adj. 性价比高的，合算的
It’s not cost-effective to get a used car with $200,000.
20万美金买辆二手车，真不划算。

Be worth the money 划算
It's worth the money to get an apartment for $10,000 in downtown LA.
十万美金在洛杉矶市中心买个公寓，很划算啊。

Get money's worth 钱花得值
Admission to Disney is so expensive that I feel like I have to stay all day just to get my money's worth.
去迪士尼的门票如此贵，以至于我感觉我需要待一整天才能让我的钱花得值。

Have money to burn 挥霍
He’s a high-earning lawyer and has money to burn.
他是个收入很高的律师，有钱去挥霍。

You pays your money and you takes your chances.
你就碰碰运气吧。
Customer: Can you guarantee that this microwave won't break?
顾客：你能保证这台微波炉不会坏吗？
Salesman: No guarantees. You pays your money and you takes your chances.
销售：没法保证。碰碰运气吧。