Im increasingly sceptical about these vertical wind turbines – someone please find me some real number with better prices

Ice Wind turbines

https://www.msn.com/en-us/weather/topstories/why-this-wind-turbine-will-change-the-world/vi-AA1R268P?ocid=socialshare

This could be the most powerful and efficient Vertical Axis Wind Turbine
Yet Another perfect wind turbine tested – vertical Savonius this time. Will it…

This one below may be interesting

This Could change Home Wind Energy Forever
How a Small Wind Turbine Revolutionize Wind Energy – The O-wind Turbine

231: A Closer Look at the O-wind Turbine