I'm wondering whether this is a correct sentence and marked the part that I don't understand in red font.

Anyone to help?

Thank you.

I never even thought of saving money because of increased consumer costs.

(Can "never" and "even" be used together? Yes. It's common.

Does it make sense?) Yes.

Consider a simpler example.

Yesterday, I saw my friend Tom in the street. He never even smiled at me.

Here's the meaning.

He should have smiled at me. In fact, that was the least he should have done. He should have smiled, stopped, shaken my hand, said 'hello'. He didn't do any of those things.

In your example, the idea is that I should have thought about saving money, and in fact I should have done more, eg actually go ahead and save money.

(What're consumer costs? Same meaning with "consumer price"?) Yes.

Best wishes, Clive