Oddly enough, most Colt revolver prices don't seem to be keeping pace with their similar S&W counterparts.
In the past couple of years I've bought 3 Colt revolvers, an Official Police in .38, made in 1968, a Colt Police Positive in .32 Colt New Police (.32 S&W Long), and a Police Positive Special in .32-20. In all three cases I paid under $400 for guns with good to excellent bluing and excellent lockup.
There are still a lot of deals to be had on Colt revolvers.
The drawback, though, is that if one, especially an older one, gets out of whack, there are few spare parts and even fewer gunsmiths who know their way around the inside of a Colt these days.