Storage cost per year
Long-term storage sounds expensive until you divide it by the years it buys. Set your kit cost and shelf life to see the real cost per year, usually just cents.
A 5-gallon bucket of rice or beans typically costs about $8–12 to pack in mylar with absorbers, and keeps 25+ years, set the sliders to your own numbers.
$9 to pack, keeping for 25 years, that's 36¢ a year to keep a whole container safe. The kit pays for itself the first time it saves a batch from spoiling.
Why cost per year is the number that matters
A bucket of rice packed in mylar with oxygen absorbers might cost around $9 in supplies and keep for 25 years, that's about 36¢ a year to protect a whole bucket of food. Judged as an upfront cost it looks fussy; judged per year it's trivial, and it pays for itself the first time it saves a batch from pantry moths or going stale.
What goes into the kit cost
For dry storage that's three things: the mylar bag, the oxygen absorber (size it with our absorber calculator), and the food-grade bucket. The bucket is reusable, so spread its cost across the batches it will hold over the years.