It's really hard to believe advertisers really do pay this kind of money for just a single click. I scraped this list for a friend few days ago so it should be still valid if you check. around 40% goes to Google from the value so this is not the net value for a click you get.
$86.02 injury attorney atlanta
$93.20 dallas personal injury attorney
$84.20 atlanta injury attorney
$83.90 auto injury lawyer
$82.80 atlanta injury lawyer
$74.02 attorney personal injury
$73.39 chicago injury lawyer
$73.30 personal injury lawyer
$71.52 personal injury lawyers
$70.40 personal injury attorney
$69.39 injury attorneys
$69.12 injury attorney
$63.40 injury lawyer
$57.44 miami criminal lawyer
$47.30 criminal attorney tampa
$46.16 tampa criminal attorney
$44.20 dallas criminal attorney
$43.18 dallas criminal lawyer
$30.12 lawyers medical malpractice
$28.33 medical malpractice lawyer
$24.72 federal employment lawyers
$18.90 dallas divorce lawyer
$18.49 chicago divorce lawyers
$16.17 houston divorce lawyer
$15.38 atlanta divorce lawyer
$14.19 divorce lawyers
$10.10 immigration lawyer miami
$06.30 immigration lawyers
These keywords are only about lawyers but rather that take for for face value you have to look at patterns. These bids are for US traffic also There are certain cities where lawyers are very expensive.
demand and crime levels of cities must be main factors. Also these stats are not for "exact" searches.