Heh, Dan, I see that you are the buyer of that 3000! Congrats, I hope you use and enjoy it...
I have only been watching for a couple of months, but it seems that in that short time, prices have really escalated. e.g. I 've bid on a few Picasso IV's; the first couple went for $250-300, now they go for $400+. The PPC accelerators were going for $500-600 when I first looked, now it's over $1000. Maybe it's just the ebb and tide of the market, and I don't really have enough of a sample size to make a judgment, but it sure seems like things are taking off.
The thing about the A3000 originally going for $4000...the contemporaries of the A3000's day that cost as much then don't go for nearly as much now. What has spawned all this interest in the Amiga?