You have some great parts there.A lot of people use Ebay as to what the part is worth.Problem is it's not what the part is worth or selling for,it's what sellers asking.Sellers are biased and usually want too much.When I am selling a car I go into Ebay and check off completed auctions in the filters on the left hand coloum.That will tell you what the part actually sold for.It might be hard to find examples of your stuff selling as that stuff is rare.
Great situation to be in
Good luck.