To the individual desiring correct, number-matching pieces, my thoughts are that $1K would be reasonable. I would think too that if someone could see the parts in person you would get more for your money. I recently had a dash and pieces shipped to me from California and was not very happy with what I got... I paid too much for parts that did not match what I was told and what was pictured. Buyers who repeatedly get "burned" with such transactions have a tendency to not spend as much because of issues such as these. If you sell to someone here on the forum that would probably be your best bet to arrange a transaction because a buyer/seller relationship is mostly already here if you frequent the forum enough.
Although I have not seen any pictures of your parts, on ebay the 2x4 setups that have a good intake, matching, number-correct carbs with the linkage would go anywhere from $750 to $1200. (Again, from what I have seen.)
Fellas like Oldmics should chime in soon - I would trust judgement from people like him.
Daniel JessupLancaster, California
aka "The Hot Rod Reverend"
check out the 1955 Ford Fairlane build at www.hotrodreverend.com