Is the subscription cost just for one month or a whole year? August 14, 2018 20:54 Updated Follow The fee is month to month and varies based upon the 4 subscription levels that Battlbox offers. Related articles Can I skip the Welcome Box (Mission 34)? Can I JUST sign up for the Knife of the Month? How long is the subscription I am signing up for? How do I send a single box as a gift? How can I get previous missions? I don't want to miss any.