Lonestar will come out and do an obligation-free, estimate for you. However, I just ordered screens for my east and west windows (a Highland Home Plan) and our bill for 12 windows was just over 400. The prices are based on the square footage of the screens, whether you choose to do a grid on the screen, etc., so its hard for you to use a price range from another's screen purchase. However, some windows are oversized and will require more than one screen, so I caution you to have your own estimate done. I called them based on the other thread, that I started a few months ago, and am glad that I took Al and the other poster's advice. This company had good warranties, a respectful salesperson, and plenty of options for my family to choose from.