Freeze dried food has it's place for long term storage. It is very expensive and not the only option for long term storage. Hard red wheat berries are long term storable along with properly stored dry white rice. Think decades or longer storage. Dried beans are also a very good long term food storage for relatively low amounts of cost. Food grade 5 gallon buckets and oxygen absorbers inside sealed mylar bags are ideal. These can all be done by virtually anyone with a bit of extra cash every month. A small bag of rice or dried beans can be had for a couple of bucks. Bulk mylar bags that are resealable 100 each qt size for mid $20's, gallons size 50ct for mid 30's and 500 oxygen absorbers for just under $30. Food grade 5 gallon buckets for storage, around $5-6 each with lid. It doesn't have to be expensive and with some spices, it can be very good. A little research on the web will tell you how it's done.