Opaindex
How we source this
Every price on Opaindex carries three things: where it came from (source), when it was true (as-of date), and how sure we are (confidence). We anchor figures to authoritative Nigerian sources — the National Bureau of Statistics, NMDPRA, the CBN — and our own dealer and market surveys, and we never publish a number we cannot attribute.
Key takeaways
- Every number names its source, its as-of date, and a confidence rating — visible on each price page.
- Figures are anchored to authoritative bodies (NBS, NMDPRA, CBN) and our own market surveys.
- We never publish a price we cannot attribute, and we never fabricate movement we did not observe.
- The as-of date reflects when a number was true — not when the page loaded.
Every number carries provenance
On every Opaindex data page you will find a short provenance line beneath the figure:
Those three fields — source, confidence and last updated — are not decoration. They are how you (and any answer engine quoting us) can judge whether a number is fit for a decision. A figure with no provenance is a rumour; we do not publish those.
What the confidence ratings mean
Sourced from an official or regulatory publication (e.g. an NBS Price Watch, NMDPRA, or CBN release), or corroborated across several independent surveys.
A single reliable channel — typically a first-party dealer or wholesale-market survey — that we have not yet cross-checked against a second source.
An early or thinly-sourced reading we are still corroborating. Treat it as indicative and check the as-of date before relying on it.
Where the numbers come from
We anchor figures to Nigeria’s authoritative price-reporting bodies and supplement them with first-party surveys where no daily official series exists:
Nigeria’s official statistics agency. Its Selected Food Price Watch and fuel (PMS, diesel, kerosene, LPG/cooking gas) price watches and CPI releases are our primary national-average benchmarks.
The Nigerian Midstream and Downstream Petroleum Regulatory Authority — reference for regulated downstream fuel pricing, used alongside retail-station surveys for petrol and diesel.
The official foreign-exchange window. We use CBN/NFEM rates for the naira and to frame import-sensitive prices, distinguishing them from parallel-market quotes.
Our own checks with merchants and wholesale markets — Lagos, Abuja, Kano, Mile 12, Daleko, Onitsha, Ibadan and others — for goods with no daily official series, such as cement, rebar and blocks.
Coverage right now
A live snapshot of what we are tracking — generated from the data on this request, not hand-written:
Confidence mix: 8 high · 5 medium · 1 low. Freshest reading as of 23 June 2026. Categories covered: Building Materials, Food Staples, Energy, Agriculture.
Updates & corrections
Survey-based goods refresh as we re-survey; official monthly series carry the report month they were published for. When we find an error we correct it at source so the fix reaches every page at once, and we lower the confidence rating until the new value is corroborated. Spotted something off? Every figure’s source and as-of date tell you exactly what we were looking at.