With that said, Tesla’s pricing does seem about in line with the un-certified used Model S units available on the open market, and you get the added security of a Tesla warranty.
I disagree. The S60 and S85s have held their value considerably better than the P85s. All it takes is a P110D and suddenly we have a 2.5s car. All the wealthy people who are suddenly without the fastest Tesla will sell their P85Ds and flood the market just as the P85 owners did when the D came out.