Buying in small sizes is a great idea for SHTF. Look at places that use gold a lot for currency and trading like the middle east. Those folks use a lot of 1,5, 10 gram weights to do their barter with. Heck, we are even getting gold vending machines here in the states now.
Cashing In on the New Gold Rush: The Gold Investing Economy - Bloomberg
Cashing In on the New Gold Rush: The Gold Investing Economy - Bloomberg