I'll play. Ok, if you are talking about the Centauro .. I'll throw a dart and say around 6500 if it's truly nice. Maybe 7500 from someone that really *wants* it. You don't see many of the sport version.
The Scura with original clutch..4500 if he's lucky.
That is a very clean looking Scura, $5k doesn't sound unreasonable, even with the possible flywheel issue.