Gonna have to disagree, while I’m not a Porsche expert by any means, the difference between the gt3 and turbo is insane, they are completely different cars. the gt3 is a pure track focused car whereas the turbo s is a straight line beast but also doesn’t lack in the handling or track department either. To then compare these to a c2s is a joke.
There is no minimal difference here however the cost is something that can’t be denied, one can definitely argue against the difference in price between the different models and whether it’s worth it. The turbo is probably what a $2500 car? At that price point you are in 570/600lt range i.e exotics.