I'd like to think we have hit the floor, buy it does not seem likely.

Consider as comparables:

Buick Reatta
Cadillac Allante
Pontiac Fiero

Going back further
Corvair Turbo Corsa/Spider
Opel GT
MGB/TR6
BMW 2002
240/260Z

All good cars in their day (IMH0), but mostly "orphans", 5-10K gets you a very nice one. I suspect our cars will ultimately fall into the same range.

my .02

Might as well get an intro in. I'm John, I live on the North Shore of Lake Superior in MN. I have owned a wide range of cars over the last 30 years. My wife and I were looking for sports car a little more modern than my '65 vette, so we added a 30Kmi. '07 6 spd coupe to the stable. We love it. Needs a cupholder though.