KJ windows came to installed a patio door and windows in our house. Great experience. I called four vendors and they all gave me the bids. I also did a lot of research on windows before I picked KJ windows. what I learned from my research is that the windows price can have a big range even with same energy rating and figure. We were quote about 100 per window to about 300 per window from different vendor and different window. It all depends on what you want. You get for what you pay for. The reason I picked KJ windows is they made me feel comfortable. The sale person Angela explain everything clear and no pressure from her. The installer Chris did a fantastic job on the windows and door. They left no mess behind and finish the job on time. I am very happy with my choice.