How do I know how much I get per click?

for individual clicks

[uhwebs]

I see people who say "I got paid X for a click once".
How do you know how much?

Sure I can divide my earnings by # of clicks to get an average price, but is there any way to tell individual clicks, or how much clicks from different pages are paying?

[ganderla]

It is usually a channel that gets one click every few days. I have a few sites like that.
One click several impressions, there ya have it, what you got per click.