Board Thread:Frustrations and venting/@comment-120.144.134.108-20131221160822/@comment-11482499-20131224073721

Hm, BCs can be farmed with time so i can argue it just adds more time needed, if you want to factor in the time spent farming the resources required as well and not just time spent grinding. In PVP events, you can farm roughly 1 BC per minute of effort.

so factoring in time needed to farm the BCs you'd use, it's 32 hours of work. But that's spread out over two 6-event days.