Re: Barking in the wrong forest.
Well I sincerely doubt you can get costs down that low but it's really not worth the bother. If you check the Warwick wind trials you'll see that micro wind has a capacity factor in the order of 1%. It's really not worth bothering with, however cheap you can make it.
ETA: in very windy rural locations (like up a mountain in Scotland) then yes micro wind can be made to work. But you may as well stick up a proper wind turbine and get a decent amount of power.