Well.... this might be a bit of a toughie. Your car has a few drawbacks; the high miles as starter, the face it's seen fleet service, and if you notice you're missing at least one of your rear chrome moldings for your rear wing windows. All those will ding you in value. But, on the other hand it is a 9C3 with the full civilian console - and from what you posted it looks pretty stock. Demand drives market price. It's always easier to start with a higher initial price, advertise it, then drop slowly and incrementally then to start low. Once you go there, there's no bumping it up again unless you list it in a completely different venue. Or pull the listing & let it freshen back up over a period of time. Sounds like you want to move the car out quickly, but don't afraid to start it at what you think the car's worth. I'm not going to name a specific number since I don't want to jinx your sale, but most certainly you should get 5 figures for it.
System Manager and your tourguide for the day. Caprice Alumni, former owner of a 2011 Caprice 9C3 with a Rotofab CAI and front radiator cover, 3.45 LSD Camaro rear diff, Chris Henry performance tune, G8 GT 18" Enkei rims w/Holden lions, custom SLP axle-back muffler set with tips, Holden WM Caprice factory spoiler, Holden SSV leather steering wheel and leather shift knob, Whelen Alpha-12Q airhorn amp. G8 GT rear seat swap, AVS Ventshades.