We wanted to replace our old wooden windows. I called Window World. They came and gave us an estimate.We decided if it was right for us. We also checked around. Their waranty was great and they also gave us 50.00 for a recomendation for a friend to get theirs put in.We lowered our heating bill this past winter. We use to have steamed up windows all the time. This year it was great seeing out side with no smeared view. Our old ones had splintering spots on them from wear -n tear. These look so fine on our house. It Made a nice presentation to our home. The price at the top was per window.You can go lower , They looked the same .