This is a costly proposition and can require a massive time investment to achieve only marginal success.

Appealing to local tastes is a costly proposition, however.

After all, he said, illegal immigrants who are ineligible for Medicaid simply end up in hospital emergency rooms, a far costlier proposition.

Replacing those who leave, after all, is a costly proposition.

But continuing the series would clearly have been a costly proposition.

She and her husband, Mark, a retired engineer, have found creating an education to serve Alia a costly proposition.

Owners of large estates are usually more concerned with keeping up the main house, a costly proposition these days.

Thus privatization is a costly proposition for New York City.

It was a costly proposition, made even more challenging by the rough and rugged terrain the tracks had to traverse.

"Economic success has a way of making war look like an ever more costly proposition," he writes.