[MetalManiac]

From what I've seen, the cheapest decent Cobra Roadster would cost around $30,000. (Factory Five).

And the cheapest decent Cobra Daytona Coupe would cost around $50,000. (Factory Five)

The Factory Five cars are always more affordable because they are hand built and someone working in a garage at home cannot really count their own labor as value because of the uncertainty and lack of customer support / service available once the car is sold. A factory-built car has a more refined, repeatable, and defined build process and finished product, thus higher re-sale value.