Yes and back when I dealt with this it was only like .75$ or a buck difference. Bearings metal cage or plastic. Plastic would win out most of the time.
And I don't even want to start on the flying public. If they only knew what that cheap airline ticket was actually paying for.
How 'bout the 27 million dollar bailout our government gave the airline industry after business slowed down after 9-11? Nobody handed me wads of money when my shop had a bad year.