I just thought of this as I attached this picture to another post. The garden window you see here has failed glass all around. I want to replace it with some kind of dual pane double-hung, but would like to know what I can realistically expect to pay. I know you guys can all do it yourself, but it's a tad beyond my ability. Also, what more might be involved in making it longer? The nook and kitchen are on the other side of it. FYI, I just had the gutters all redone and the downspout is now behind the fence.