I got a message back from the guy whose auctions I will bid on today. He is basing his good screen count on what they look like with the POWER OFF. Any damage done to the screens while off will not be visible until recharged.
I sure hope they were handled and packaged carefully to avoid flexing or pressure to the screens. It would suck to pay more for a demo than I can get a used "normal" kindle for, after counting only the ones with good screens.
Now I just need to decide how much to bid. This feels like gambling (which I do not do). I like to know what to expect before I pay. But I will bid anyway and hope for the best. This is a significant amount of money. I hope I am doing the right thing here...