Prepared, not scared · Prices checked Oct 17, 2026, 6:34 AM ET
The cheapest day of eating, checked daily.
We rank emergency food by what a full 2,000-calorie day really costs, water filters by cost per gallon, and we watch 1,909 products from 18 brand stores so you can tell a real deal from a dressed-up one.
The Bunker Index · Top 10
Cost per 2,000-calorie day, in stock, at today's brand-store prices. 108 foods ranked.
#1Wise 3-Month Supply & 72-Hour Kit BundleReadyWise · $549.99 · 206,940 kcal#2Mayday Food Bars 2400 Calorie -Case 24Echo-Sigma · $166.50 · 57,600 kcal#3Wise 4-Week + Wise 72-Hour Kit BundleReadyWise · $199.99 · 68,710 kcal#44-Week Wise & Ready BundleReadyWise · $239.99 · 81,310 kcal#51 Month Mega Food SupplyReadyWise · $244.99 · 80,780 kcal#6Buy a Wise 4-Week Supply, Get Free Wise Milk & Vegetable BucketReadyWise · $239.99 · 73,330 kcal#7Mayday Food Bar 1200 Calorie -Case 36Echo-Sigma · $148.50 · 43,200 kcal#81-Month Supply & 120-Serving Entree & Beverage Bucket BundleReadyWise · $279.99 · 77,800 kcal#9WFS 4-Week Patriot Emergency Food Supply | Over 2,200 Calories/DayReadyWise · $239.99 · 61,930 kcal#10Wise 3-Month Survival Food SupplyReadyWise · $776.99 · 200,160 kcal💧 Water Index cost per rated gallon
| Rank | Filter | $ / gallon | Price | Rated | Brand's wording |
|---|---|---|---|---|---|
| #1 | Survivor Filter Straw Ultra Filter Replacement Survivor Filter In stock | $0.0006 | $16.95 | 26,417 gal | "can be re used up to 100,000 liters (26,417 gallons)" Note: Replacement Ultra Filter element only |
| #2 | SURVIVOR FILTER™ Pure 10K - Replacement Chlorine Filter Survivor Filter In stock | $0.0080 | $80.00 | 10,000 gal | "Capacity: 10,000 gallons (37, 854 liters)" Note: Replacement chlorine filter for treated tap water |
| #3 | Puribag Micro - Mini membrane water filter Uncharted Supply Co In stock | $0.0174 | $22.99 | 1,321 gal | "Filters up to 5,000 litres of water" Note: 5,000 L converted at 3.785 L per gallon |
| #4 | Puribag Pro - Membrane Filter Kit Uncharted Supply Co In stock | $0.0227 | $29.99 | 1,321 gal | "providing up to 5,000 liters of treated water, depending on water turbidity" Note: 5,000 L converted at 3.785 L per gallon |
| #5 | LifeStraw Peak Series Straw Echo-Sigma In stock | $0.0260 | $25.99 | 1,000 gal | "Long-lasting membrane microfilter will last up to 4,000 L (1,000 gallons) of water" |
🧭 Browse 1,909 products 13 categories
📉 Brand-listed markdowns today Deal Meter warming up
These are the biggest gaps between today's price and the brand's own "compare at" price. Our Deal Meter checks whether a sale is real by comparing today's price with each product's own 90-day median. Our history started Oct 17, 2026, so verdicts switch on after 14 days of data. Until then, treat "was" prices with healthy suspicion.
WiseFire 1 Gallon 60 Cup Fuel Source
$5.00CREAMY POTATO - Soup Mix
FROM $4.99CHEDDAR POTATO - Soup Mix
FROM $4.99VEGETABLE BEEF Flavored - Soup Mix
FROM $6.00WiseFire 2 Gallon 120 Cup Fuel Source
$15.00Self Heating Kit - Spicy Asian Style Noodles + Snack Bundle
$15.00Self Heating Kit - Lasagna with Sausage + Snack Bundle
$15.00Self Heating Kit - Pasta Alfredo with Chicken + Snack Bundle
$15.00Black Friday · Friday, November 27, 2026
The Doomsday Black Friday Tracker
We've been recording prices since Oct 17, 2026, so by Black Friday we'll know each product's normal price and can call out the fake sales. The live deals page opens November 1.
How it works
We check prices daily
One polite request per brand store per day, using each store's public product feed. No logins, no tricks.
We do the math
Price ÷ (total calories ÷ 2,000) = cost per day of eating. Calories come from the brand's own page, linked.
You spot the real deals
The Deal Meter compares today's price with the product's own history, not with a made-up "was" price.