If anyone is interested, steam has Black Ops 3 Multiplayer starter pack for $14.99 right now up until Feb 29.
This is a multiplayer only version that has limited content. You can't play the campaign or zombies. It has a few more restrictions but I don't remember what they were.
Also, you have the option at any time to upgrade to the full version if you want.
Doesn't sound too bad for $15.