These people [1] have shown that you can store $1M inside a microwave with room to spare. $100M fits on a shipping pallet. No doubt that physical money storage

These people [1] have shown that you can store $1M inside a microwave with room to spare. $100M fits on a shipping pallet. No doubt that physical money storage has associated costs. -0.1%/yr isn't enough to get someone to start storing money, but -1%/yr probably is. [1] http://www.cockeyed.com/inside/million/million_dollars.html http://www.cockeyed.com/inside/million/million_dollars.html