Need to evaluate this bike

I just bought this bike last year and was wondering what the price this would sell for. For context i live in Italy

Cannondale supersix evo hi-mod (don’t know the year)
Changed pretty much everything

Size 52
Electronic groupset fsa
Carbon cranks 172,5 mm
Carbon vision 30mm wheels
Carbon aero
Carbon seat post
Aero carbon cockpit
Titanium bolts
Aluminium and carbon forged 10 cm stem
Excellent conditions

Also I’m asking this because I’m thinking of selling it because my theory is that with time even top class rim brake bike will sell poorly. So I believe it’s better sell it now than later. Tell me what you think