This is a hard question to answer really,
I tell my helper that his job is to make sure I never put the wand down, if I stop he is not doing his job and he gets a kick up the ar$e.
I tell him we only making money when I am cleaning carpets, not moving furniture, not tabbing chairs, not pre-spraying he does that, all I do is wand.
With this in mind If I spent 5 hours wanding the amount of carpet I would clean is incredible, to put a price to it would be in 3 figures easily.