Okay, you made me go and read the article. First, we are talking 47 windows. I have a decent size house and all I have is 26. And from the diagrams, they look pretty large. And odd shaped as well. I can see why he needs "custom" windows. At $137,000 it works out to just less than $3,000 per window. Certainly high, but it is custom. At $55,000 it is certainly more affordable at almost $1,200 each That doesn't seem too bad for a large custom window.