Another group of snake oil salesmen making money off your fear, paranoia, and irrationality.
In the event of complete societal collapse--
Not only will your paper money be worthless, so will coinage and every precious metal.
Your ammo will eventually run out.
The only thing that will be of any value will be your asshole or vagina.
Let these people waste their time and money on prepping for doomsday. It means less time they'll be spending interacting with the normal people of society.
Interacting with normal society might help them.