I'm considering trading my 1Ds in for a 5D at Adorama or B&H. They told me on the phone it would probably get me $3000. That's more than I'm being offered for private sale. My concern is shipping it all the way down there and them then telling me they'll only give me much less money for it. Anybody have any experience with this situation? My 1Ds is spotless, with only one tiny scratch on the top. Has anyone done a similar deal with any of these companies?