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I am interested in purchasing your vertical axis wind turbines, specifically looking for options similar to the models I've mentioned. Could you please provide me with the pricing details for these turbines? I'm particularly keen on understanding how they perform and any additional features that may be relevant for my needs. Additionally, I am planning to set up an on-grid system and would appreciate any recommendations you have for components that would work well with your turbines. Please include a complete list of suggested items, along with their prices, so I can get a clearer picture of the total investment required for this project. Thank you!