If it is a new D2x or D2Xs for $920, with a warranty, I think that *is* a pretty good deal,at least in terms of what the camera can do,and how well-made and responsive the camera is. It's got exceptional quality at the base ISO speed--better than other 12MP cameras like the D300 or D90. The autofocusing system of the D2x also has a very sophisticated wide-area, four-mode AF system that's excellent for action photography and has exceptional corner and off-center AF abilities. I own a D2x and have since May of 2005.
The battery performance is incredible, in terms of shots per charge, as well as life; the original battery I have is still doing well. The camera also offers the normal 1.5x FOV crop on all lenses mounted, but also has the option of High Speed Crop with the press of a button, switching to a 2.0 FOV crop shown in brackets that lights up at the corners, with the press of a button,and jacks the frame rate from 5 FPS at 12.2 MP to 8.2 FPS. The D2x was the absolute best camera Nikon could make for a couple of years, and was the highest-spec'd crop-body camera ever made by any manufacturer. Its Achilles heel is the sensor's High-ISO limitations; by ISO 640, you will need to run noise reduction on images shot in poor light, or if you underexpose. On the other hand, the D2 series is the "focus anywhere Nikon"...you can select basically ANY focusing point and the AF system can lock focus, even way off center,and the shutter and mirror lag times make the camera really fast in action. It's a professional body. The viewfinder the D2x has is exceptionally sharp and bright--better than any crop-body I've ever seen, and I've looked at dozens of different bodies.
Whether $920 for a new camera is a good deal for you is hard for me to say; if you need or want the many benefits of a flagship-level body,or are anxious to get away from the limitations of consumer-level or pro-sumer level autofocus, it might be worth the $920.