Heres a link to the company that makes them. I don't read Swedish but maybe there's a price in there somewhere.

http://www.homeenergy.se/vindkraft.aspx

Join the club, my home town has a north northwest wind all the year, and very strong! This kind of "windtraps" on top of the buildings would provide much energy!
The downsize is that the goverment would put a high tax just on those things...SS107Mhz knows what I'm refering to!

Yup, on the news they come forth like they're all he rage about renweable anergies, but then came a small town who decided to use the restaurants oill to provide biodiesel for all of it's vehicle fleet, and so they live happily ever after...until the government found out and prossecuted them for not paying the ISP (the tax over OIL[petroleum] by-products)... Didn't even knew frying oil was made out of that... And really thing our country has probably the mst incompetent, negligent, near sighted, just plain stupid sequence of governments since the mid 90 in all European Union... stupid People get stupid Governments...But they are smart enought to keep the people stupid...