工程浩大， 所费不赀。

The project is on such a gigantic scale that the cost is hard to calculate.

《新英汉大辞典》

婚姻花费颇巨，单身更是所费不赀。

Marriage cost is quite huge, single is more expensive.

youdao

婚姻花费颇巨，单身更是所费不赀。

Marriage cost is quite huge, single is more expensive.

youdao