A neighbour seems to have been unsuccessful in trying to sell his 991 GT3 over last winter via SOR, at one time GT3`s were thought to be THE Porsche to own and drive or as a sure fired investment.
As has been typed I suspect the mix of the cost of borrowing has hit the Porsche market and for classics of most types, the marked demand perhaps mostly created by baby boomers over decades may be subject to all of the many aging/financial processes that seem logical to expect with the passage of time...?