Bit the bullet and got one of these. The shipping was prompt and it works. Chris refunded my $5 after the fact as a Radar Roy customer when I forwarded a copy of my receipt from before the tester purchase.
And now for the good stuff:
This is the best tool ever for getting 18-wheelers off your a$$ at 75 MPH.
They can't see in my vehicle as they are on top of me but the laser tester apparently triggers their detectors as they back off really quickly.
It's also great fun to wake up bimmer drivers as their V1s report the tester from behind. Haven't tried other left-lane denizens but my son couldn't stop the laughing as he saw the brake lights coming on.
There will be new radar reports when these get out....