what a fair price for 8 3/4 sure grip

been a while i just finished 85 step side now to finish 73 duster but need to raise funds to paint so my ? is what is a fair price for a 8 3/4 never used sure grip it came with the duster from what i've read it is a cone type ,the car was built for strip so i think it was an extra the #'s i see are c ( or o )30847 i'll try to so pic's thank's in advance