Edit: Woah, I shouldn't make threads first thing in the morning. The DLC aren't "sold separately", they're sold in a pack. I meant to say you can now buy them officially instead of trying to buy old pre-order codes. Sorry for any confusion that may have caused. Anyway... I just checked the Xbox Marketplace and all of the pre-order DLC has been bundled together and is being sold for $4. Seems like the game will be pretty easy with all of them, but I'll probably get it and perhaps play through the main story one more time. I had $70 worth of points, but I, uh, blew them all on Borderlands 2 DLC. I'll have to buy more points next month before I buy this pack.

It's out on Steam now. I just bought it and.... Arcane Assassin Pack is not in the list of DLCs I have... all other 3 DLCs are, though. I will raise a ticket for Steam Support, but knowing how *fast* they are thought I'd post about it here as well