Francis Philip :
k1114 :
Pc is free, you just have to buy the game.
The hard copy or the digital copy?
Origin is Free. You just have to google the website and download the app, much like Steam. Although, you're gonna have to buy Battlefield 4 (Just buy it digitally directly through Origin, even if you buy it Hard copy you'd still have to put in a code into Origin and the Disc is pretty much useless after that). After buying Battlefield 4 (Which is about 20 USD), then you have the complete access to the game, whether its Campaign or Multiplayer.