generator wind turbine axial flow 10-30w impossible to find?

[zeus01]

Hello, I search for several months on the web a alternator axial flow three-phase permanent magnet for small portable tidal turbine 12v between 10 and 30w and 150 to 400 rpm
(I said he will not be immersed) Here is what brings me closer to my project: https://www.youtube.com/watch?v=pNFL-quoyo0

impossible to find my happiness on the web apart from this: "10w-Max-15W-DC12V-High-efficient-Small-Domestic-Wind-Turbine-Generator-5-Blades"

http://www.ebay.com/itm/10w-Max-15W-...QAAOSwo4pYPAaz

I know the trick of the stepper motor used as a generator but which in my opinion should be mediocre?

I am unable to manufacture by my own means an alternator axial flow which to my knowledge is the most effective in my case?

Do you know international resellers for this type of product or other solutions?

please