The strength of what you buy varies eighteenfold. The price rarely moves.
We transcribe published certificates of analysis, work out what a gram of mitragynine actually costs at each vendor, and record what happened when we placed the order. Where a vendor publishes nothing, we say so.
Cheapest by the alkaloid, not by the kilo
A kilo at $79 testing 0.4% gives you 4 g of mitragynine. A kilo at $110 testing 1.8% gives you 18 g. The second is less than half the price of the first, per gram of what you came for. Sorted by that number:
No vendors with both a published assay and a current price yet. The table appears once there are.
What we check, on every vendor
- Mitragynine and 7-OH, transcribed per batch
- From the vendor’s own certificates, with batch ID and test date. Not from the product description.
- AKA list, checked by hand
- A vendor claiming certification while absent from the official list is recorded as exactly that.
- COA age
- Results past six months are marked stale. Alkaloid content degrades and vendors rarely re-post.
- Batch-to-batch spread
- Two orders from the same vendor can differ substantially. We publish the range across every batch we have.
- Refund window, payments, shipping exclusions
- Paraphrased from the policy pages, with a link to the page we read and the date we read it.
- Our own order
- Order date, delivery date, whether the packaged batch ID matched a published COA, and how long support took to answer.
Common questions
How do you rank vendors?
By cost per gram of mitragynine, computed from the vendor's own published certificates and their current kilo price. Not by commission, not by sticker price. Vendors with no published assay cannot be ranked and are listed separately, marked as such.
Why not just compare price per kilo?
Because tested mitragynine content in commercially available kratom ranges from 0.11% to 2.02%. A kilo at one end contains roughly eighteen times the alkaloid of a kilo at the other, at broadly similar prices. Comparing kilo prices tells you almost nothing about what you are actually buying.
Where do your numbers come from?
We transcribe them from certificates the vendors publish themselves, recording the batch identifier, test date and laboratory alongside every figure. Each value on a vendor page links to the document it came from and shows the date we read it. We do not take figures from other review sites.
Do you get paid by vendors?
We earn commission on some outbound links, disclosed at the link itself. No vendor pays for placement, ranking or a score, no vendor reviews a page before it publishes, and the ranking is a calculation rather than an opinion, so there is nothing for a commission to move.
How often is this updated?
Prices and certificates are re-checked on a rolling basis and every page carries the date each field was last verified plus a visible history of what changed. There are currently 0 vendors on file.