I've been looking around and you can get aftermarket, not sure of quality...but I'll get the best I can get
I've had a Nilfisk C120 for around 5 years, and apart from a split lance hose, it's been great.... cheap and cheerful. Hose wraps up on mine. Not too powerful. Fine for car duties.
One feature that I really like about it is how the lance and handle rotate, meaning you can change your angle of attack without contorting your wrist. I'd not really noticed this until I used my Dads Karcher and realised how cack handed it was.