Perhaps you haven't thought this through. In this situation food and water are more valuable than a DVD player. Whom do you imagine has a large, dry storehouse of food and medicine to be had in exchange for consumer electronics?
This is what makes the looting so sadly irrational. People spend tremendous energy not in trying to help others, but in gathering stuff that they will mostly have to abandon to the flood waters anyway. It's re-arranging the deck chairs on the Titanic as it sinks.
SD
I have thought it through and seen the same thing happen in Indonesia after the tsunami with people coming in from the outside and selling packages of noodles for US10.