At one time there were plans to use this in the RV. Plans changed (a lot) along the way and this has been forgotten on a shelf. Includes all accessories (2 faceplates, knobs, d-sub connector, etc). $135, shipped free CONUS:
I also have a used PM501 that was removed from a Cardinal during a complete avionics upgrade for $75. It does not have the vertical faceplate, connector, manual or mounting hardware.