Originally posted by Pål Jensen and when the FA Limiteds goes out of production....
I'm kind of interested to see how high those prices go. I would imagine quite a bit higher.
At the same time they already saw a pretty large price jump. If the FA 77 went over 1000, I don't think many people could justify it with the DA 70 sitting around, so maybe that one wont get too crazy.
I honestly think that most of the prices just have to do with rarity. The 31 is pretty hard to find an alternative for, therefore, the highest price.
Your 18/3.5 is nothing special by modern standards, unless you mounted it on a full frame camera (and look at the alternatives available from Canon, Nikon, etc.) It has more to do with the fact that not many people bough them in 1978, so the alue of yours is high.
Therefore, overpriced lenses *would* jump in price even more after 30 or so years, because their rarity would increase. However it's not exactly worth it unless you will use the lens and can afford it comfortably in the first place. Much better return on investments elsewhere
... especially when you adjust for inflation!