Clearly, the economics of the gas station industry have changed sharply.

The economics are changing and getting more negative on a daily basis.

After the war, the economics of the industry had changed, and a new larger mill was required.

If we had to spend $130 million for the core and shell, the economics would have changed radically.

Then, in the early 1990's, the economics of drug development changed.

The whole economics of energy and the economy have changed.

The economics of the book trade have changed considerably in the last few years.

Since the stadium was built, the economics of sports marketing have changed.

But the economics have drastically changed over the past two years.

Analysts said the economics of customer satisfaction might also change.