Bullseye Opal plate glass hardly allows light through.
Please note, some shades are Strikers. This means that they change color during firing.

The price of 3mm glass plates is per plate, plate size: 51 x 89 cm = 0.45m2
The price of 2mm glass plates is per 1/2 plate, plate size: 51 x 45 cm = 0.23m2