I've bee looking for one and even the well worn ones are going for plenty. I'm guessing $400 - $800. I acquired a complete slide with barrel in what appears to be unfired condition and have been looking for a frame or heavily worn copy to use with it. So far, the prices I've see are too high for my purposes.
I would say it is an excellent price. I paid $400 for my stainless one used, excellent condition and one extra mag but no box. I sent mine back to Colt to be checked out and have the lugs looked at as they were very slightly peened, and it came back with a clean bill of health and the barrel lugs cleaned up.
I have put a Wolff spring kit in mine and put on a set of double diamond checkered rosewood grips and I just replaced the blued grip screws with stainless slotted ones from Woodgrips ( had to shorten them as they were for a 1911 ) to better match the rest of the pistol. I also replaced the slide stop spring with a new one as it would sometimes lock the slide back on a partial magazine and, I believe, the stop would engage during recoil due to inertia and a weak slide stop spring. The new one was stiffer and the stop would no longer lock back on an empty magazine with two of my magazines. Wolf 5% extra power magazines cured that and now everything is working as it should.
I doubt that your pistol, being new, will give you any trouble though. Mine was a local sherrif's BUG and had been carried much and practiced with a lot.