Not much info on the 6.9 at all, and the photos are about as helpful. From what you can see, it looks tidy but rough. For example, the rear seat is in a bad way, the leather on the front seats is very dirty, the rear suspension is down compared to the front, the rear bumper bar has a few dings or something and I wonder whether the paint on the rear right door is a bit faded - although that could be the photo.
The buy now price of $10k is very high based on what I can see in the pics, although one would need to see/inspect it to tell for sure.
On the other hand, that 280 looks fantastic. I dont really know what these are worth, but would be interested in what others think.