It is a very capable 35mm film slr. If you offered it to a bunch of photography students who were required to buy a 35mm slr, you might get $100 for it but you would get a certain sale if you offered it for $75 (this assumes it has a lens included).
On the open market, you would be lucky to get $75 for it and much less if it didn't have the lens. That's because the lens can be used with many modern Canon DSLR's.
Best bet is to check ebay and look on the left bar for "completed items" to see what actual sales went for.

