User blog comment:Deathmanstratos/Black Ops II Apocalypse DLC announced/@comment-130.254.79.135-20130814211918/@comment-10357065-20130815131928

That's a good idea but from a marketing standpoint they want you to buy the game and by the dlc. If they put it on 1 disc and sold it for $60 they wouldn't get as much. Black ops plus dlc is about $120