kerambits are one of those specialized knife designs that require hours and hours of training to be of any practical use in a self defense role.
Have you had any training at all with the Karambit ? It is not used like a normal knife. If you are not going to learn to use it correctly , and instead are merely going for the "spin and see how cool I am " look , you will be better off with a basic folding knife.
I agree that there isn't any middle ground on price with these.
It just seems there is no "inbetween" price.