If you look around there are deals to be had. Although with Colts you kind of have to define "deal". I picked up this Python a year and a half ago for $850. Not exactly cheap, but a bargain for a 1964 production gun in 97% condition.
Picked up this New Service in .45 Colt last year for $400. Cheap because of the refinish, it is as tight as new.
Found this 1977 DS last November for $500. Kind of at the upper price range for one of these, but easily a 98+% gun.