I have a used, very lightly scratched piece of 24 5/8" x 48 1/2" playfield glass off my Spirit. Just replaced it but hate to see it go to waste as it's not that bad. I believe it's the same for Black Hole, Devil's Dare and Haunted House. Free to a good home. Pickup in North Jersey (Oakland).
I'll hold onto it for a week or so, then it's kibble.