Sentence examples for prove costly from inspiring English sources

Mistakes could prove costly.

The fears may prove costly.

Yet such short-sightedness can prove costly.

Missing the deadlines could prove costly.

Both errors can prove costly.

If there are, they may prove costly.

But this numisphobia could prove costly.

Today's success may yet prove costly tomorrow.

The victory, however, may prove costly.

Bounced cheques can also prove costly.

It may prove costly in another way.