Because I don't know the value of anything any more.

You know the value of a park if anyone does.

He knew too well the value of time and opportunity.

He is a man who knows the value of ground.

You know the value these people put on face, and we won't have any!

"We don't actually know their true value because they have never come on the market."

You don't know the value of what you're looking after.

No one can know the value of the lost material.

"We simply don't know the value of the technology until after the fact."

It's a good idea to know the value of your property.