Haven't checked there in awhile. But amazon.com may be another good place to check. When I had upgraded from my PM New Classic, to my Sony INT-W250 (Plus), I found a, "New Never been used," unit on amazon. Everything was still in their factory sealed things, cables, video, manual, etc. The seller had no idea what he had, selling it for only $35.00 plus $5.+ shipping.
Then I bought a used spare Sony Plus on Ebay, getting it and updating it, making sure that it functioned fine. That one was $50.00, but still good IMO.