well if no campaign, I can not think of spending more than $20-$30 for it, which this might be the first cod i have skipped all together. alot of other things out there that can take its place this year.
Edit: if i remember correctly with cod 3, unless you had the season pass you couldn't even get to zombies, and now its another separate purchase for cod 3. Which i guess if you want just that, it works for you but its like 3 parts to 1 game to play its like steroid DLC.