Remember keyword alone is not enough, you need matching domain, keyword placement, good title stuffed with your keyword and finally traffic. All these keywords are being used by big companies. Your better luck will be on lesser keywords with less competition.
As somebody who has a personal finance and investing blog, it was interesting to see that many of the highest paying keywords related to loans, refinancing and credit problems. What ever happened to saving, investing and retirement??? The list speaks volumes about the state of personal finance in the U.S.
Mesothelioma is the highest paying keyword out I believe. The last I was told it costs almost 120$ per click