Hmm... I just got a reply back about the 40 K3 units. He said that the 75% he tested as "good" powered on, but that the screens did not change when pressing buttons. Let's hope that is "normal" behavior for these, because that *could* potentially be a sign of damaged screens. I hope that the price is right. My bid is awfully high for any less than 30 good screens.
EDIT: I got a clarification message now after requesting more details. The screens DID change at power up. Great!