Series two is a classic, but keep in mind it is late 70's early 80's. no matter how minimally used, it is still vintage electronics, there is one on ebay close to you which I am guessing you are talking about. If you search around a bit i think you should be able to get the price down about a grand, there is one on craigs list in anchorage for 2500 and a while back one was listed for 3 grand.
IMO 2500 is about right, 3500 is high
Sharyn