Which one's aren't shakey these days? The New Piper? Cessna who just

The Piper Comanchie has been out of production since the mid-sixties. Does this
hurt the selling price of these birds?

I have bought some Aero Commander Larks and never sold them for less than I
gave for them.

A well maintained Bellanca or Mooney will bring more than they sold for new.
Does this relate to a shaky company.

Sometimes I think airplanes are like the futures market, no one knows.