I took delivery of one of these last week, at £145 delivered you cant fall off! these 200/400 duos retail at over a grand inc VAT.
Mine looks very lightly used and comes with what looks like a new flexi drive board, have had a quick play but I havnt had chance to use it in anger yet, comes with manual and 90 day warranty.
It is a heavy beast of a machine, so taking it upstairs may be an issue.
I bought it as an agitator but the dual speed will mean I can do some hard floor scrubbing as well with it. I wondered what the catch was at that price? it appears there wasnt one!