price war
price competition

Certainly the situation will not be improved by a price war in oil.

What is the chance of getting involved in a price war?

Some say that all the companies will be hurt by a price war.

"The last thing we need in this industry is a price war," he said.

In the end, the price war did not hurt business.

The best way to win a price war, then, is not to play in the first place.

Right now, the price war is at the device level.

It promises to start a price war within the year.

And he said the move did not represent the start of a price war.

It's not smart to start a price war with someone who has a lot more money than you.