Anyone who buys gold as their principal form of payment for the post-‘pocalyptic polity is a poltroon.
Everyone knows the best thing is going to be silver dollars for major purchases and silver dimes for everyday shopping.
And you can get rolls of pre-debasement pure silver Roosevelt dimes for a very reasonable price.
When TSHTF, one of those dimes is likely to be worth at least ten of today’s funny-money back-by-nothing-but-Chinese-debt dollar bills.