Here is another take on the vertical axis windmill by a dutch company called Turby. Their offering is a 2.5Kw generator which comes with a price tag of €11,466 for the turbine and converter. The mast and installation are extra.
I am struck by the high price of these wind turbines. I wonder what makes them so expensive? You could buy a car for the price. Hopefully the Chinese will start to produce wind turbines and once they get their hand into this type of kit they will turn it out for a third of the money.