I'll trade my Sync(a707) and my t629 for your d807
I have a Samsung Sync (a707) and a Samsung T-629. The Sync has normal wear and tear from the last 4 months. My T-629 is brand new (I've used it 3 days).
The only thing is I need the d807 unlocked for T-mobile.
I used the d807 back when I had cingular, then it went for a swim so it got ruined, then I moved on to the Sync, and paid full price for it. 4 months later I ported to T-mobile (my contract was up in four months, that's why I got the sync for four days).