I've recently bought a KAB ev-1 cleaner therefore making the Knosti that I have redundant. First things first : 1 - there is no fluid - what I have left is dirty and probably no use to anybody. 2 - needs new filters - as once again these have been used and are pretty useless. However, it costs about £15 for new fluid from hififorsale.com. So the main unit is available for anyone who wants it. I think it will cost about £4 for postage and packaging (and me queuing up in post office) - it is fairly big but light. So anybody who would like to buy the main unit can have it for £4.