Deadweight

Deadweight · the whole table

Show your work.

Nothing numeric exists in this codebase without an entry on this page. Each cell below is a range, not a point estimate, because the honest ranges are wide — a single air freight figure quoted to the cent would be a lie of precision, and sloppy arithmetic is the thing this project is about.

Every cell falls into exactly one of three categories, and there is no fourth.

Quoted
the sentence the number came out of is printed underneath it.
Derived
the arithmetic performed on the source is written out so you can repeat it.
Assumption
reasoned from guidance rather than taken from a source, and flagged as such everywhere it appears, including on the ledger line that uses it.

The engine reads costs at the low end of each range and usefulness at the high end by default, so every verdict on the front page is the best case these sources permit. Rigging the numbers toward the argument would make the exercise worthless.

The rate table

14 cells. Named as the engine names them, so you can grep for one and find the code that uses it.

Every assumption, listed

These cells are reasoned from humanitarian guidance rather than quoted from a published figure. They are the weakest part of the table and they are named here so nobody has to find them.

In-region replacement prices for every catalogue item are assumptions too — the UNICEF Supply Catalogue publishes no relief-item unit prices we could read. That is why valuing the usable share at local prices is off by default on the front page: the headline verdict is kept to sourced figures only.

Other Sources

The catalogue

Declared value is what a donor in a high-income country would say the item is worth — retail, or the replacement cost of a used item. Weight is what decides the freight bill, and weight is what decides most verdicts.

Every citation

Found an error? That is the point of printing this. The figures move, the guidance is revised, and a rate table published in September 2026 will be wrong by next year — the dates are on every cell so you can see how stale a number is before you trust it.