DeletedUser10480
My theory (going on what we've been told officially and this new finding) is that all the cash brought by the fort fighters to the battle is added to a cash pool from which every survivor will have a chance to find something. So your own cash won't matter per se, but the total amount of cash brought into the battle (plus some luck).
Of course, it might be that only players who are KOd will have their cash added to the pool - obviously there's no way of knowing this for sure without seeing the game code.
This might be right. I was in a world 7 battle yesterday. Carried no cash. Survived. Many survived. I got a black tie worth $750 sale value. That might mean that people were carrying cash. It is certainly out of the statistical range of the survivors.