I have no doubt there's $180K in the build & restoration, and I doubt Finer Details - a premier Mopar shop, last I heard - has cheap prices.
But I'm thinking $100,000-$125,000 may be top dollar for it outside of an auction.
Whether Final Details did all the restoration work - the ad indicated they finished it - tells me there may be a story, or something hidden, but maybe I'm just cynical from seeing so many hack jobs.
By the same token, they may have looked it over very well before taking the car in; in any case, I'd sure want to talk to them if I was considering the car.