I looked a little deeper for you: http://www.amazon.com …/B000V5P90K/ref=pd_cp_p_1
There are refurbished bodies for $599 at Amazon. That's fair. It's essentially a brand new camera. They don't even get used enough to get a scratch. Most likely wouldn't turn on, and went back for a second look and quick fix.
I don't blame you for looking at that model. You'll get (in my opinion) better image quality than anything made after that (unless you step up to full frame). The 40D is 10mp, and if you don't need to crop, you get insanely clean images with no noise (unless you go above 1600 and underexpose).
NOTE: The above amazon link leads to a lot of third-party sellers. I always trust Amazon, but I don't know if Amazon consistently links to reputable dealers. Hard to say.
I'd try a few things: 1. Call the Canon Loyalty Program (accessible by phone only). See if they have it. 2. Call B&H, Beach Camera, and Adorama to see if they have any refurbished models.
And like others suggested, try Ebay for used. I've never bought a used one, but many people do and seem to do alright.