Is this Duster overpriced?

I think so by 5-8K. No underside shots to boot. Lack of description.
The problem is that it can cost you that much to do build it when you farm the work out or so very little of it. If you none of the work, it can cost more to build.

What is needed is a personal up close look in around and under the car with as much information as possible about the drive train and the history.

I believe you can do as well as that car appears to be for a bit less.