whats it worth? 1972 340 4 speed duster

I think that 340 Duster would fetch about $3500-4000 up here. We are used to starting with RUSTY project cars. I could imagine guys from the dry Southern States would be scared of it though. $500 is a BONEHEADED, INSULTING, assessment, in the first place. Mind you every car guy I know wants something for nothing. It's one of the things that leaves a bad taste in my mouth about the hobby. Just sayin'.............