I bought a 5DC on ebay for 750 +22 S&H.
Had a few scratches in the paint, mainly to the left of the left side buttons and on the bottom of the body. LCD also wasnt perfect but meh.
Took a black paint marker to the scratches and polished the LCDs (theyre also cheap and easy to replace). Camera looks pretty damn good.
Wasnt even planning on getting a 5Dc at the time, was saving my money for the Olympus OM-D E-M5 lol, but won the auction so I went with it.
Anyway, I agree with the others, I wouldn't pay more than 900, even if it was 100% cosmetic condition.