A similar bike did sell for over 2800 dollars a year ago, so overpriced? I doubt. Nice example you have there btw.
I very well remember getting the catalog in the lbs in the early nineties. The 1991 catalog including pricelist. Both can be viewed in the gallery. Retail for the PR-6000 was 6998 guilders, what was a serious lot of money you will know. Other highlights in the catalog are the drawing showing all tubes in main triangle have the 28.6mm diameter, the MC-Pro MTB in team colors and the radical MC-Comp e-stay.
With my remark "overpiced" I'm just stating the fact it never sold before due to it's price. If the price had been right along the course of its life it would have found an owner. Probably the owner never wanted to sell the bike in the first place. I understand it is very hard to part with such a beautiful bike.
The 6998 is about 3175 euro with inflation correction of about 2% a year this is around 4800 euro today. So in respect $2800 = E2100 is a bargain. However if you buy last years high end model that costed 5000 euro you could get a discount of up to 30%. The NOS panasonic was discounted 30% after 20 years! Imo its just retro. It will never be vintage.
First I thought about selling my panasonic when it was finished. Now I'm not so sure anymore and would probably alse only sell if someone would offer some ludicrous price.