I am supposed to list a couple of avionics items for my flight department.

I pretty much know how much a GPS-155XL is worth, but the Argus 5000/CE is a
mystery.

I've looked in Trade-a-Plane, Eastern Avionics, and the history search on
Ebay. No Joy. I don't really want to auction it off with no reserve. Anybody
know the value of a used unit?

Karl