It really depends on the amount or lack of Rust as to what it's worth. Good paint + solid body = worth the price. Price body shop labor and paint these days, 6K won't cover the cost. .
i understand that argument. but in reality it usually doesn't hold true for a beak car. just so hard to get money from a dart with a beak. if that thing was a 70-72 then i'll bet someone would pay 6k for it as long as it was clean. being a beak car they are lucky to get 4k for it. just the reality of the situation.
whats nice about a 73 is that it most likely has big bolt disc brakes already and you can pull the beak off and replace it with a 72 front clip. the 74-76 are doomed without having to do major surgery..