You have is easy in the USA.
Down here in Australia, you do 45km/h (30mph) over the posted limit and it is $2500 (US$2300) 3 month license suspension and 6 points (you get 12 every 3 years)
In some states they set the speed sCameras at +2mph threshold, so they click away at around $100 for the minimum fine.
Radar detectors are very illegal and you would get a $1000 fine and 9 points off your license.