here is a quick demo of my V-1 radar detector in action. i wasnt really planning on making this video, but it just started going off and i happened to have my camera on me. not sure if it caught the undercover cop (was in an unmarked car), but hopefully this video has some value (i havent seen it yet).
this radar detector is about $400 and hasnt gone down in price for years. this is because this company actually uses military grade technology and has the ability to update your unit whenever the police start using new technology. it is still possible to get tickets with this thing, but if you're smart and know how to use it, it lowers the risk by a LOT. if cops use laser, youre pretty much toast no matter what (cuz it uses a more narrowly-focused beam). but it takes a lot of energy for a cop to use laser versus using radar, so its a little bit less likely (but not super rare or anything like that).
anyways, i hope you enjoy this video.