Previously owned Black + Decker Lids Off White Automatic Electric Jar Opener (JW200) Tested W Box and Inserts.  Item shows signs of age related discoloration to the white plastic but is otherwise in good condition and is functional.  The inside rubber grips that move in and out on the plate have some discoloration to the interior of them since they're a semi-sticky, rubber like material and are difficult to get fully clean.  The bottom plate that spins around has some slight resistance and a slight noise due to crumbs possibly falling underneath, but the device still works fine.  Please see video for more details as it's captured in there along with a demo of it opening a jar.