Not sure if this is any help but before I upgraded to the V280 2 years ago I looked at the option of buying a refurbished V180. At that time, the cost was about $21,000. That included delivery, installation and full certification by local Xerox to place under service contract. I also inquired about buying the V80 I had and it surprised me that they only wanted $5,000 for it (I don’t do $1 buyouts). If I had the room I would have just kept it.
I don’t think that Xerox really wants these back so figure they may be giving you around $5,000-$7,000 at best, or worst nothing. It’s an aging model at this point even though they share so much in common with the V280.