7 subscription pricing test ideas for UK merchants

What to take away

Change one variable per testthe price point, the offer framing or the plan structure.
Test GBP charm endings (£9, £19, £29) against round numbers (£10, £20, £30).
Every savings claim needs a genuine reference price behind it.
Read results by renewal cohort, never by first-order conversion alone.

Test the price point before the discount

Discounting is the easy move, and it usually costs more margin than it earns. Test the base price first.

Price point test cohorts

£24

Base price: £24
Ad spend: Held steady
Delivery promise: Unchanged
Metric: Conversion and margin

£27

Base price: £27
Ad spend: Held steady
Delivery promise: Unchanged
Metric: Conversion and margin

£29

Base price: £29
Ad spend: Held steady
Delivery promise: Unchanged
Metric: Conversion and margin

If a box sells at £25, run three cohorts at £24, £27 and £29 (illustrative figures). Hold everything else steady, including the ad spend and the delivery promise.

UK shoppers cluster at £10, £20 and £30. A move from £19 to £21 often reads as a bigger change than £21 to £23 does.

Track margin per box as well as conversion, because a price rise and a discount rarely leave the same money behind.

Try charm endings and round numbers side by side

Charm pricing such as £9.99 makes a price feel lower, and it suits low-ticket consumables where the monthly outlay is the main objection.

Charm vs round pricing

Charm pricing

Example: £9.99
Best for: Low-ticket consumables
Perceived as: Lower price
Compare: Retention past month 3

Round pricing

Example: £30
Best for: Curated or gift boxes
Perceived as: More considered
Compare: Retention past month 3

Round pricing such as £30 reads as more considered, and it tends to suit curated or gift-led boxes.

Run both at the same margin, then compare which cohort retains past month three. This walkthrough on how to run a subscription cohort analysis in Excel shows the pattern faster than a single conversion figure.

Frame the trial: free, £1 or paid

A free trial brings volume. A £1 intro box brings commitment, and it filters out people who collect trials.

Trial framing options

Free trial

Effect: Brings volume
Consent: Express consent required
Show at sign-up: Renewal amount and cancel route

£1 intro box

Effect: Brings commitment
Consent: Express consent required
Show at sign-up: Renewal amount and cancel route

Paid trial

Effect: Filters trial collectors
Consent: Express consent required
Show at sign-up: Renewal amount and cancel route

The Consumer Contracts (Information, Cancellation and Additional Charges) Regulations 2013 require express consent before you take a further payment, and a pre-ticked box is not consent (legislation.gov.uk).

Show the renewal amount and the cancel route on the same screen as the sign-up. Ambiguity there drives both complaints and early churn.

Back every discount with a reference price

"Was £40, now £25" only stands up if £40 was the genuine price for a reasonable period. The CAP Code requires savings claims to be honest and the comparison to be capable of proof (ASA advertising codes).

Safer framings are "first box £15, then £25" or "12 boxes for the price of 10". Both are arithmetic and easy to substantiate.

VAT changes the headline too. The standard rate is 20%, so a £30 consumer price contains £5 of VAT (GOV.UK VAT rates).

Keep the plan structure simple

Two tiers are easier to buy than three. If you want an anchor, place a premium tier beside the mid tier you actually want to sell, and check that the mix does not drift to the cheapest option.

Three tiers suit ranges where usage varies, and only if the middle option is clearly the best value.

Annual plans priced at ten months' cost give a real saving and pull cash forward. Test whether annual buyers renew at the same rate before you push the option harder.

Raise prices by cohort, not across the board

A rise lands hardest on customers who joined at the old price and have not seen a change since. Grandfather the first cohort, apply the new price to new sign-ups and watch the renewal date closely.

Churn usually shows up there first, and the tactics in this guide to reducing subscription churn for UK businesses are worth pairing with any rise.

Run the tests in a fixed order

Each test needs a hypothesis, a single variable and a reading date before it starts. The table below lists the seven options and the metric each one should move.

Test	What changes	Metric to watch
Price point	Base price at £24, £27 or £29	Conversion and margin per box
Charm against round	£9.99 compared with £10	Conversion and three-month retention
Trial type	Free 14 days compared with a £1 first box	Trial-to-paid rate and day-30 churn
Discount framing	£5 off the first box compared with a free gift	Second-box rate and average order value
Tier count	Two tiers compared with three, including a decoy	Plan mix and revenue per subscriber
Annual anchor	Twelve boxes for the price of ten	Cash collected and 12-month retention
Price rise	Grandfathering compared with a rise for all	Renewal churn by cohort

Write the hypothesis and the one variable you are changing.
Split traffic so each cohort sees one price and nothing else differs.
Run for two full renewal cycles before reading the result.
Compare renewal rates by cohort, then keep the winner.
Start the next single-variable test on the same page or email.

Common questions

Which price should I test first?

Start with the base price, not the discount. It is the number the whole margin rests on, and it is the cheapest test to run.

Does charm pricing work in the UK?

It suits low-ticket consumables, where the monthly outlay is the main objection. On gift-led or premium boxes, round prices often read better.

How long should a pricing test run?

Long enough to cover two renewal cycles, which for a monthly box means about two months per cohort. Reading earlier only tells you about sign-ups.

Should the headline price include VAT?

Yes, for consumer-facing prices. The standard rate is 20%, so a £30 headline price contains £5 of VAT.