Review on Discover the Perfection of ETA Hand2Mind Porcelain Streak Plates by Steve Hauck

I'm a rock artist and a member of the very respected St Augustine Rocks Rock Art Group on Facebook. I experiment with different painting substrates. I ordered hand2mind White Streak records, 2" x 2" x 1/6" (pack of 10). When they arrived, 4 of the pads were broken and unusable. They were rolled up loosely and placed in a mailing envelope. Unsatisfactory and stupid I would like to order more but 40% breakage is not acceptable.