Which is more rare a hemi car of any flavor or a camaro or mustang...? Thats what drives the price if camaros and Mustangs are bringing big money they would have to be an example of a rare camaro or mustang why? becasuse they made a hell of alot of camaros and Mustangs, there isnt a hell of alot of hemi cars. This is basic supply and demand stuff. A Mustang would sell for big bucks in a place where they arent readily available like in another remote country in the world there,it would be a rare car.