It looks like it's been fired since it left the factory and also has a ding on the underside of the barrel. Check picture number 8 to show the carbon residue around the forcing cone. You won't see this on an unfired factory Colt. The front of the cylinder also looks to have been cleaned up. I think I'm safe to say it's not NIB! If you want a true NIB Nickel Python I would keep looking.
It is not a new or as new revolver.
The box & whatnot seems OK.
The money is........
Not a snowball's chance in Hades.
Not me, and not most guys on here.
Somebody will buy it, though.
What was it P.T. Barnum said?