$500 is most reasonable, in my opinion. They'd never get $2,000 parted out, and they'll never get $1,000 for the whole thing either. Dare them to try it, they won't (and if they try it, they'll be in for a big fat disappointment).
Incidentally, I'd very much like to know why they have the rear cable TIE WRAPPED to the chainstay. That's quite suspect.
-Kurt
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