Corvette Kiwi

What would be a fair cost to buy a 1961 Corvette fuel-injection unit that works, is is in decent/good condition, and comes with the proper distributor? A unit that I'm looking at has the air horn assembly … but not the air cleaner. Supposedly it was in working order when pulled off of the engine. The unit looks to be in OK condition (but not perfect) and will likely need the standard rebuild to make sure that all is well.

So, what would be a fair purchase price for such a unit?

Also, what would be the price of a fully restored unit?