Were you already going to buy one new and this one came up as a great deal?
Or are you just toying with it and if the price is right, you'll pick it up for grins and giggles?
Around the $9k mark would be a decent price if it's essentially new and you actually wanted that specific rifle and that specific scope and their sighting system add on.
But if you are getting it for grins and giggles just because it's a deal, well the economy isn't doing well, folks will soon have to sell their expensive toys for what they can get, it's not an easy item to resell because of limited demand.
So if that's the case, $6k or around that is more of the kind of Hebrew deal you want to try to get.
If the seller wants over $10k for it, well I'd simply just let them sit on it for a year or such and then circle back and see what they say.