Batman: Arkham City Collector’s Edition will cost you $99.99 USD

Best Buy has listed the Collector’s Edition of Batman: Arkham City that will cost you $99.99 USD. Although we don’t the specific items that this Collector’s Edition will include, we do know that Robin will be included in this package and that this package is right now only available in the US.
What could possibly justify such a high price? Perhaps a miniature or an official action figure? Or the inclusion of more day-one DLC?
We’ll inform you as soon as we find out!