Porsche Factory Used Car Lot

In the Porsche factory used car lot cars go  for ABOVE retail.  Why?

Interesting story.

Each engine that is build is dyno tested and must make between 100 and 105% of rated power.

If it makes less than  100% it is rejected and the person who built it has to determine why and charge back the appropriate vendor or log a build mistake.

If it makes more than 105% of rated power it goes into an executive car, to be driven by a Porsche Exec for a period of 6 months. It is then returned to the factory and sold as used.

Buyers know this and are willing to pay a premium for these cars.