Cost-effective adj. 性价比高的，合算的
It’s not cost-effective to get a used car with $200,000.
Be worth the money 划算
It's worth the money to get an apartment for $10,000 in downtown LA.
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.
Have money to burn 挥霍
He’s a high-earning lawyer and has money to burn.
You pays your money and you takes your chances.
Customer: Can you guarantee that this microwave won't break?
Salesman: No guarantees. You pays your money and you takes your chances.