I paid $1800 including shipping around November, 2009, for this absolutely flawless (case perfect too) '89. I had to ship it from Germany. I agree that the deal is in the eye-of-the-beholder but, I did see several nice ones go (missed them by that much) for around $800 just before i got fed up and just paid for this one.
Point is, I think these basses will hold their value in the long run. Most $800 deals I've seen were from people who really thought they were asking a fair price for a bass i.e. non musicians, non collectors, etc..., but didn't research the true value.
I've heard this story more than once now: I bought this bass for my (wife, girl friend, etc...) and it has just sat in the closet for the last X years. And, now I just want to sell it for what I can get. I think these are the $800 deals we are seeing lately.
Paul