Sentence examples for a very costly from inspiring English sources

This was a very costly proposition.

"It was a very costly object lesson".

This process is a very costly endeavor.

That would be a very costly mistake.

And that was a very costly mistake.

It was a very costly bet.

This is a very costly approach for many reasons.

"It could have been a very costly mistake," he said.

"It's become a very costly thing to run".

It could have been a very costly white elephant.

But it's already a very costly game of catch-up.