This is a biscuit joiner or also called a biscuit cutter that I got for $19. Not sure what a new one would cost as it appears this is an old model that is no longer made.
Yesterday I walked to Goodwill to look for a bag to carry my laptop in and spotted this radar detector for only $2.52. A new one runs $300. It looks like it works, when I plugged it in, it lit up and I was able to go thru the programs. Would be nice if I could find instructions on how to use it.
Using supervisor tape(the two-faced stuff) I attached some rubbery drawer liner to the bottom to keep it from sliding around on the dash. I don't have the bracket with suction cups that would mount this to the windshield and don't want one as that would let people know I might have something worth stealing in the car like a radar detector or GPS unit. The Kid had a GPS unit in her car attached to the windshield and someone smashed the window in the driver's door and stole it.
Anywho, this seemed to work as I set it on the dash and drove for a ways today and it didn't move. Will see how it works next time we make a road trip.