划算 (huá suàn): Profitable / to be worth it (Verb, Adjective) — Meaning & Stroke Order

Considering the long-term returns, investing in this project is indeed very profitable.

Do you think it's more cost-effective to redeem air tickets with points than to buy them directly?

Buying this piece of clothing is very cost-effective because it's good quality and cheap.

It's not worth it at all to waste a whole day just to save this little bit of money.