Hi, we're building a new house and we're about to start construction. Our contractor had priced Andersen 400 windows for our project, but a friend of ours recently gave us a quote for marvin integrity windows that came in several thousand less WITHOUT installation. We prefer the Integrity bc they come in black exterior, which we love. Our contractor is fine with us going with marvin instead, but we'd need to have them installed by certified marvin window installers (The andersen windows were to be installed by certified Andersen installers). So we're outsourcing it. My question is - do any of you know what we can expect to pay per window? We have approximately 44 windows. Someone told me a cost per window, but it seemed really high. (we live in maryland). Thanks!