I want to see if these Hot Wheels are worth anything.

First, a Deora 1 from 1967 “Return of the fifty-foot moon maiden!”.
Not in it’s packaging, good condition.

Second, a ‘57 Chevy from 1976 “I was a teenage freak from outerspace!”
Not in its packaging, decent condition.

Finally, a 1996 Chevy from 1995
Not in it’s packaging, great condition.

Can someone tell me how much these are worth in Australian dollars?