Price of vintage Aurora slot cars?

Mid century HO slot car race car toys I recently obtained this interesting collection and thought

Discover a wide selection of Aurora HO Scale Slot Car Sets for enthusiasts! Relive vintage racing with rare sets and tracks from the 1960s and 1970s

aurora slot Vintage Marx Sears HO scale slot car race car set The set has been in storage for probably 30 years at least toy toys Aurora afx tyco

aurora beast hunter slot Complete Color Guide to Aurora HO Slot Cars by Bob Beers The amount of information - both text and visual