If this is really all original, this thing is fantastic looking. Doesn't look like a car that's more than 4 or 5 years old. I don't know enough about these first gen FL's to say if the price is fair or not, but I'd be willing to bet it is. 

https://losangeles.craigslist.org/sfv/cto/d/1956-desoto-firedome-seville/6752809262.html