划算 (huá suàn): để tính toán

This down jacket originally cost over a thousand yuan, but now it's 50% off, which is even more of a bargain than buying it online.

We compared three renovation companies and finally chose the one with the most cost-effective quote.

Taking the subway is a bit slower, but it's more economical than taking a taxi, and you can save quite a bit of money in a month.

This restaurant's lunch set is large and inexpensive—very good value for money.

The buy-two-get-one-free promotion is a great deal, so we bought two extra bottles of shampoo.