One Piece Window Kit??? Anyone have it?

[Hazieview]

I was wondering how good the one piece window kits actually were. I have a 1987 short bed chevy that I was thinking about putting the one piece window kit in but I didn't know how good it was. It sure is expensive for such a modification. has anyone purchased and/or installed one of these kits? How do you like it? Was it worth the money? Any complaints? What happens if your window get smashed? Do you have to order a new custom window for 2 million dollars or what? Thanks for your help!