I'm torn between coffee and bleach.
Coffee, imported from the tropics, will be priced out of my range. If I have coffee I can probably lure strapping, young urban farmers to my compound to tend my crops and fortify my defenses.
On the other hand, bleach is created by 1 or 2 companies under super-secret guarded conditions and may also be priced out of my range. Less water and crumbling infrastructure equals dicey sanitation and super germs that will scoff at our green vinegar and lemon juice. Earthy-crunchy dreadlocked vegans may trade all manner of goods and services for 8 ounces of bleach.
What will you hoard?