what to offer

So I have this car...1985 Alfa Romeo Spider 2.0. I want to sell the car...and I want to give a fair price. Reverse does not work well. There is a little oxidation on the trunk lid. The side mirrors could use re-painting. Dent on inside of trunk, slightly noticeable on outside. Slight door dings...

I have been looking for a car to fix up and I found a 71 Spider 1750 in a garage (Ontario, Canada). It has been parked for 9 years without being started. It looks in good shape, no rust, decent interior, OK roof. I don't know how many kilometers on it. Apparently it has had some motor work done...