the first one look like this on video.
http://youtu.be/UeOtfDYQPl8[/video]
I own one of them and after 2 months of using it this is how my ipad look like. I just noticed it tonight while i decided to give it a quick clean with cloth as dust getting there after some time. So make sure you warn your customer before they pop in to your shop claiming money back + damages.

