According to their content estimates its more of a "expansion" than DLC. Its going back to basics before DLC and expansion were interchangeable, i.e. Not just a few maps and some weapon skins. Expansion is a whole other chapter of the game, see World Of Warcraft or any other MMO. The price is fair. Will it be worth it? Bungie-vision's track record says no, that's why I'm waiting for reviews or a better deal.