Standing Order, Standing Cost: Reckoning High-Strength CBD Subscriptions by the Milligram
Photo: elsaolofsson, CC BY 2.0, via Wikimedia Commons
Subscriptions are sold as thrift. A percentage is struck through, a delivery cadence is proposed, and the implied promise is that loyalty is rewarded with a lower unit cost. For a user taking twenty, fifty or a hundred milligrams a day, that promise deserves arithmetic rather than assent. The only figure that survives a change of bottle size, strength, carrier oil or promotional period is pence per milligram, and recurring billing alters that figure in ways the discount badge does not disclose.
The number that travels: pence per milligram
Begin with the raw conversion. Take the amount actually debited, divide by the total milligrams stated on the label, and multiply by one hundred. A 30ml bottle carrying 3,000mg at £84.99 works out at 2.83p per milligram before delivery. The same bottle on a 15 per cent recurring discount, at £72.24, lands at 2.41p per milligram. On the face of it, the subscription is cheaper by roughly four-tenths of a penny per milligram. Over a year of daily 50mg dosing, that difference is not trivial.
Two corrections should be applied before the comparison is trusted. The first is yield. A 30ml bottle rarely surrenders 30 measured millilitres; glass, shoulder and dropper tend to withhold a millilitre or two, and a cautious audit assumes 28ml of usable oil. That has no effect on the label figure but it does affect the milligrams you actually ingest, and it moves the effective cost of the 3,000mg bottle to about 3.03p per milligram one-off, or 2.58p on subscription.
The second correction is definitional. Some brands quote total cannabinoid content rather than CBD alone, counting minor cannabinoids and any CBG or CBN present towards the headline milligram figure. Where the certificate of analysis separates CBD from total cannabinoids, use the CBD figure. A subscription that looks competitive on total cannabinoids can be unremarkable on CBD.
What arrives in month four
Price is only half of the recurring-order question. The other half is what the parcel contains. Subscribers are, by design, served from whatever stock the warehouse holds; a popular strength turns over quickly, a niche one less so. A 3,000mg oil that sits on a subscription list may be despatched from a batch manufactured several months earlier, and high-strength oils are not indifferent to time, light or repeated opening.
A workable discipline is to log, for every delivery, the batch or lot code, the manufacture date, the best-before date and the cannabinoid figures if a batch-specific certificate is published. Three or four entries will expose a pattern. Consistency of lot code across consecutive deliveries suggests slow-moving stock. A best-before date that shortens by more than the interval between deliveries suggests the opposite problem: batches cycling faster than the labelling can keep up with.
Where a batch-specific certificate of analysis is available, compare it against the previous delivery. Potency variation of a few per cent is normal; a swing of fifteen per cent or more on the same product warrants a question to the retailer.
The clauses that decide the arithmetic
A subscription is a contract with a price mechanism attached, and four provisions do most of the work.
Price variation. Many recurring terms permit the seller to adjust the price on notice, typically thirty days, with continued delivery treated as acceptance. That clause is the mechanism by which a discount erodes. A brand that raises the list price by ten per cent and keeps the subscriber's fifteen per cent discount has still raised the subscriber's cost per milligram by ten per cent.
Discount type. Distinguish an introductory discount, which applies to the first order only, from a lifetime subscriber rate. Both are commonly labelled in the same way on a product page. The order confirmation email is the document that settles it.
Reformulation discretion. Many terms reserve the right to change formulation, carrier oil, flavour or strength without terminating the arrangement. A shift from 3,000mg to 2,500mg at an unchanged price takes a 2.41p per milligram subscription to 2.89p, and no discount badge will announce it. The batch log is the only reliable detector.
Minimum term, notice and skipping. Some schemes require a minimum number of deliveries; others allow skipping but not pausing, or require notice of cancellation several days before the next dispatch. Establish the notice window precisely and diarise it.
On the consumer-law side, recurring payments made by card operate under a continuous payment authority, which the card issuer can cancel on request, and the subscription-contract provisions of the Digital Markets, Competition and Consumers Act 2024 are being brought into force with requirements around reminder notices and exit routes. The practical point for 2026 is that cancellation should not depend on a telephone queue; confirm any cancellation in writing and retain the acknowledgement.
A three-column ledger and a fixed review date
Auditing a subscription does not require software. A single sheet with columns for dispatch date, strength in milligrams, amount debited, pence per milligram, lot code and best-before will do. Add a final column headed decision.
Set the review interval quarterly, and place a calendar reminder seventy-two hours before the next scheduled dispatch. That buffer is the difference between a review and a regret: it falls inside most notice windows and leaves time to skip a delivery, query a batch date or cancel outright. At each review, ask three questions. Is the cost per milligram still at or below the best one-off price available for an equivalent strength? Is the batch arriving reasonably fresh? Has any clause, strength or formulation changed since the last review?
Two affirmative answers and one negative is a subscription earning its place. Anything less is a standing order that has quietly become a standing cost, and the milligram, not the discount, is the figure that settles it.
