Cost-effective

Hallo !

That is what I know about Cost-effective:

It means: bringing the best possible profits or advantages for the lowest possible costs

• The most cost-effective way of reducing carbon dioxide emissions.
• The procedure is quick, easy to use and cost effective.
• It wouldn't be cost-effective to buy an expensive new computer when all you want to do is word processing.
• Nursery and child-minding facilities should be introduced if there appears to be a level of demand which would make it cost-effective.
• How can that possibly be cost-effective in terms of the operation of a paratroop battalion?

Many thanks !