I bought a Karcher K2.35KB + on Friday from Argoooos.
£60, 1600w with 360L/pH and people have good results with it for snow foaming.
Received my AB Karcher foamer this morning having ordered it yesterday.
Earlier in the thread someone meationed about greasing the end of the foamer as it's a bit of a tight fit in the lance and they wasn't joking! Jees....
But it was cool to use.