Interesting small turbine. I'd definitely consider getting one if I ever moved back to North Kerry where it's blowing a hoolie constantly. If it's reliable and the figures are to be believed it might actually pay for itself in about 18 years. Less if the cost of electricity rises further.
I looked at the specs and I don't think this will ever pay itself at $4150 for the pack with the inverter (unless you're living right on the coast and even then I would be skeptical) and this has to have some sort of periodic service requirements as well.
It needs constant 36kmph winds to reach 150w which won't even cover your average baseload.
Years ago I looked at installing a wind turbine and was advised to look for a Vertical Axis type. They may not be quite as efficient as the HAWTs but they suffer much less mechanical failure. 'tis the gearbox on them that fails mostly caused by the hunting in turbulent wind conditions. VAWTs don't care which way the wind is blowing!
I was looking at another US made turbine HelixWind, but they inconveniently went out of business. An interesting video on YouTube shows what was on offer at the time. https://www.youtube.com/watch?v=zkJiNNLOuow Good soundtrack!