For a made-up example, in the adwords keyword tool for the keyword phrase "random phrase", adwords says that the CPC is $1.00. I would expect that if you search for "random phrase" and my site comes up that google will pay me ($1.00 - x) amount for each time someone clicks on an adsense ad. It doesn't work like this. Sometimes google pays me less and sometimes pays me MORE for an adsense click than what the adwords CPC is.
So is there a way to find out how much google will pay for an adsense click?