The BIG difference is in whether or not you are buying or selling And your degree of patience.
I can still occasionally find shooters for $600 to $800; BUT, I would not sell one for that; for when I go looking for one they are priced above $900!
Too "smart" or too "greedy" , matters not which; when you get a luger in your hands that belongs to you- the "value" goes up. JMHO.
Not to even consider that you may "need" it; a part might break in one of your other shooters!