Opinions on what this car is worth

That's good, nice persistence. I want to see some pics since the original ad is long dead link.
I do agree 70s are worth the most in Dusterland but it's not as big of a deal as other mopars. The Duster was hardly even facelifted in its production run. Here is a fixable $650 one
http://missoula.craigslist.org/cto/4616445038.html


At the other end of years here is a 76 with no pictures but the 4 speed setup alone may be worth a large part of the asking price. http://helena.craigslist.org/cto/4649591800.html