I guess I just don't get it.
I never new this was a real issue (glare). My games all seem to play just fine. I can see the playfield and I can see the ball......I'm Good!
Invisiglass in kind of neat.......I guess. Let's see regular glass in around $25........hmmm......I might (might) be willing to spend $40 (If I can pick it locally) for Invisiglass.