How much is your changer worth? DeWalt MobileLock GPS Locator DS500

This device is awesome! You could never get a better feeling then showing up at the thief’s house with the Police. But $500 is a little steep along with a $20 a year charge. Not really sure what good it would be if the thief or employees could see it? Check out the amazon or dewalt links. DeWalt MobileLock GPS Locator with Anti-Theft Alarm #DS500