"Some of the land is becoming too valuable for poor people."

International rights have become increasingly valuable and agents are reluctant to part with them.

It was almost as if lead had become more valuable than gold.

They also reduced government spending to stop money becoming less valuable.

"He had became more valuable to us than we were to him," said one Government official familiar with the relationship.

The owners sought to retire, and the land had become more valuable.

It never occurred to me that the place had become so valuable.

He had acquired an interest in the new field and this now became very valuable.

"The land and building have become more valuable than the business," he said.

In recent years, however, the Superbird has become quite valuable.