In all seriousness it all looks pretty normal. Edges are typically made of steel. Steel oxidizes. It doesn't need to be left outside in the rain or dipped in the Pacific Ocean for this to occur. Boards in shops are always taken out of the plastic at any core snowboard shop I've ever been to. Maybe you're used to shopping at a box store like Sports Authority or something. Scratches happen, but you got a significant discount because of it. It will look that way after a few days out on the hill and riding on your ski rack anyways.
You got a fantastic deal on a new board. Now go use it. /thread