I love lists like this. Recently updated highest paying keywords from Google. Top Ten:
$54.33 mesothelioma lawyers
$47.79 what is mesothelioma
$47.72 peritoneal mesothelioma
$47.25 consolidate loans
$47.16 refinancing mortgage
$45.55 tax attorney
$41.22 mesothelioma
$38.86 car accident lawyer
$38.68 ameriquest mortgage
$38.03 mortgage refinance
Found on Xooglers.