While I'm no expert overall I feel his $ is in the correct range. These cars are in high demand and getting tougher to find. When I was looking for my Charger I saw many project cars going into the $25K range. Ma Mopar produced less cars so that also drives $ up.
IF you were to buy this car I'd expect you'd put at least $30K into it and perhaps 2 years min working on it, depending on how much time you work on it.
I figure it needs ~$8k worth of new sheet metal, maybe $10k. The paint and body is at least $15k for the type of finish I require. Drivetrain is restoring what is there, so who knows, could be $3k-$5k.
Interior is where I am fuzzy on the numbers. I bet a full dash restoration is in the $1000's, just don't know how many thousands.
I can do all the work myself except for machine shop work on the engine if required, and the body and paint.
I have a body rotisserie and would do all the panel replacement on my own time, but it looks like I'd have to build a body jig for panel alignment.
Take all those numbers and multiply by at least 1.5.
I know what I'd be getting into if to look at the link in my signature. It would be a long term project for me, but it's what I find most enjoyable about this hobby. I enjoy the work more than the driving, if that isn't too weird...