Mesothelioma - the most highly paid keyword?

Mesothelioma is a rare form of carcinoma of the mesothelium lining lungs or abdomen or heart. And variations of it are the highest paying keyword. I have seen it featuring in several business lists. But how does it become the most highly paid keywords? Do google pay those high rates? I have been trying to find answer to these questions.

I did a lot of search and no one has any conclusive answer. But there are several lists on the internet with Mesothelioma having high rates. Now how does this rate work? I find that most sites showing mesothelioma having a rate of $84.08. Does this mean that for a click the page owner will get $84.08?

Anyway it is being propagated that mesothelioma ($84.08), mesothelioma attorneys ($80.93), mesothelioma lawyers ($69.04),
malignant pleural mesothelioma ($55.95), Asbestos Cancer ($54.17), mesothelioma symptoms ($53.66) and peritoneal mesothelioma ($52.27) are the hottest selling keywords.