[B]What is the market on a used 964 motor?[/B]

[930gt-40r]

I know there are diffrent renditions of the 964 motor (updates or no updates) and there is also leaks or no leaks. What would anyone here pay for a good leak-down non-leaking 964 motor with just below 100k miles on it?
Note: with everything needed to run as far as electronics go.