Are large non-standard wind turbines produced in series?

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The most common type of wind turbines has a horizontal axis and three wings. However there are many other types of wind turbines, from which also several large units were realized. But as I know these are or were only prototypes and I have got the interesting question: does one wind turbine manufacturer offers large wind turbines of non-standard design ( hereby I mean all wind turbines, which have no horizontal axis and three wings) with diametres of more than 10 metres for sale?
I believe not, but who knows.