What do you mean, expensive and laborious?

Spending money and effort means spending a lot of money and effort.

Usually it is a word that is often used when doing a job that is difficult to do, consumes a lot of financial and material resources, and the result is not necessarily ideal;

It is difficult for us to do this, which is both costly and laborious.

Words like wasting money and effort are laborious, and the antonym of wasting money and effort is saving trouble and effort.