Transformers: ReGeneration One 81 - Optimus Prime Sketch

Here is the story with this sketch cover. My understanding is that when IDW kicked off the ReGeneration One Transformer comic book series they made 50 of these sketch covers and gave them all to Dan Khanna to sketch and and sell or give out at conventions. This is one of those original sketch covers. The sketch cover is one of the early sketch covers so the paper on the cover is a little glossy and horrible to draw on. This is why a lot of these early sketch covers have simple drawings on them. It's because they are a pain to work with. Do you know anything more about these Transformers covers?