But leaving them behind might be just as costly in the long run.

Going without insurance may save money, but it can be costly in other ways.

This means that they are less costly in terms of energy used.

But doing nothing - or leaving the job half done - could be far more costly in the long run.

"Because it would have been too costly in terms of human lives."

This is costly in terms of both time and money.

Goods are also more costly here than in other parts of the country.

However they are not very costly in the later stages.

But those changes would have been costly, in dollars and political capital.

The inning was costly in yet one more significant way.