I don't have a Porsche, but I still have my basic version 1995 Toyota Corolla I bought when it was new.
It is in almost mint condition.
this year I replaced the heater blower motor (took about an hour), and the battery.
I have been having a 19 year love affair with my car, and I have no plans on selling it.
I do wish it had electric windows, and door locks.
the blue book value is between $400 and $900
I have a friend that works for Toyota and he always tries to sell me a new car, but he agrees that my car was one of the best built corollas.
FYI, a geo prizm is basically a Toyota corolla with minor changes