If TSHTF many spices will be virtually impossible to obtain and they will be worth their weight in gold or ammo.
Historically, in food prices, spices and pure sugars (honey, sucrose) are high value. Meat and starches are fairly cheap historically, because they are easy to find/grow.
Learning how to turn starches into sugars is useful, too. But that takes a bit of study and equipment.
/johnny
I love the Indo-Pak store.
I bought about 25 lbs. of spices for $80.
Now I make several recipes of curry powder.
BTW, for very long term storage, I freeze or refrigerate. E.g., I keep meds in the fridge.