If its the one I think it is it a German military issued knife. Any knife buff would hate it, but rest assured its used because for the trooper it was cheap, replacable and works.
Kukris are popular because of jungle training in Nepal and many SAS come from The Royal Green Jackets as did McNab which are affiliated with the Gurkhas. Kukris are not expensive. Basically its issued stuff, PX privately purchased as could be found in any unit, or very occasionally something very good because that individual was into the subject.
There are better things to spend ones money on: beer, girls, climbing equipment, mountain bike, house/mortgage.