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Use our data: free widgets
Put the daily cheapest emergency food and water filter rankings on your blog, forum or prep list. Free, no sign-up, no tracking, and they update themselves every day.
Bunker Index: cheapest emergency food
The 5 cheapest emergency foods by cost per 2,000-calorie day, with a tab for cost per serving. Updates every day with our price check.
Live preview
Option 1: script (auto-sizes)
Option 2: iframe
Options for the script version: data-rows="3" to "10", and data-view="serving" to open on the per-serving tab. JSON: /embed/data/bunker-index.json
Water Index: cheapest water filters per gallon
The 5 cheapest water filters by cost per gallon of brand-rated capacity. Updates every day with our price check.
Live preview
Option 1: script (auto-sizes)
Option 2: iframe
Options for the script version: data-rows="3" to "10". JSON: /embed/data/water-filters.json
The fine print (it's short)
- Free for any site, commercial or not. No account, no API key.
- Keep the credit link ("Data by Prepper Prices") visible and clickable. Please don't add nofollow to it.
- Don't change the numbers. They're computed from brand-store prices and brand-stated calories, ratings and capacities. See methods.
- Fast and private: each widget is a single small HTML file with inline styles, no web fonts, no cookies and no trackers.
- Prices change daily, and the brand's checkout price is the one that counts.
Quoting a number instead?
Cite it like this: Source: Prepper Prices (prepperprices.com), brand-store prices checked Oct 18, 2026. Then link the page you used, such as the Bunker Index, the Water Index or the monthly Prepper Price Index. Press questions: [email protected].