Seven conversion pricing structures measured on identical meters and whole-life cost

This comparison uses one England merchant case and measures seven conversion pricing structures on identical meters and whole-life buyer cost. Research date: 6 September 2026.

Method: compare the same product-page and checkout investigation through each structure, using published seller prices where they exist and labelled typical ranges where they do not. Inclusions: meter, period, scope, evidence, change, tax and exit. Exclusions: prevalence and predicted results.

What to take away

Define the common case

The buyer needs page and claim review, authorised research, and design and development. Controlled allocation, journey analytics and privacy assessment follow. Accessibility evaluation, safety review and payment reconciliation sit alongside quality assurance, monitoring and rollback.

The government's online-selling guidance supports the common customer journey around price, payment obligation, correction and confirmation. The comparison does not assume an order equals cash or retained contribution.

Use one volume record across all structures. State eligible customer journeys, period, timezone, bots and staff. Add duplicates, rejected tracking, late refunds and disputed orders.

If a supplier meter cannot be reconciled to that record, mark its exposure unknown. Do not convert visitors into sessions or experiments into variants through an assumed ratio.

Side-by-side comparison:

Compare seven structures

Each structure below is anchored to a real tool, seller or network, with its published meter and price where one exists.

Fixed or project: Shopify Plus builds. The unit is an accepted deliverable. Shopify Plus is listed at $2,300 a month on a three-year term and $2,500 a month rolling, before any build work.

Fixed-scope audits and theme builds are typically quoted at £4,000 to £15,000 in England. Agencies such as Brainlabs, Croud and Speero quote this work on scope. Record evidence, dependencies, revisions, change control and acceptance. A low headline sum may exclude ongoing monitoring or correction.

Retained service: VWO and Hotjar. The unit is a contracted period with specified work and support. Hotjar's free plan carries a daily session cap, and its paid plans start at about £30 a month.

VWO Testing plans run at typically about $250 a month, rising with monthly tested visitors. Define included capacity, pause, rollover and response, plus renewal and termination, rather than assuming availability.

Seat or user: Semrush and Adobe Analytics. The meter is an entitled identity. Semrush lists Pro at $139.95 a month, Guru at $249.95 and Business at $499.95 on monthly billing.

Annual billing costs less. Adobe Analytics is quoted per user and on request. State role types, inactive accounts, service users, access changes and audit method. Do not treat a seat as customer volume.

Sessions, events or visitors: Google Analytics 4 and Convert. Define the counted object, identity, bot handling and duplicates. Add late arrivals, rejected collection and timezone.

GA4 standard is free. GA 360 is reported at about $150,000 a year and is quoted on request. Convert.com lists plans from about $99 a month, scaled by tested visitors. The ICO's storage and access guidance remains a separate device-operation boundary; billing mechanics do not provide permission.

Test or experiment: Optimizely and AB Tasty. Define what opens and closes one billed test, plus variants, reruns and aborted exposure.

Optimizely Web Experimentation and AB Tasty quote enterprise contracts by tested visitors, typically from £30,000 a year. A vendor's test unit does not establish statistical validity.

Outcome-linked: Awin, CJ Affiliate and Impact.com. Name the payable event and the counterfactual needed to show causal incrementality.

Affiliate commissions are typically 5% to 20% of order value, and networks such as Awin typically take around 30% of the publisher commission. Raw order growth, platform attribution or a conversion-rate change is not sufficient.

HM Treasury's impact-evaluation guidance explains why monitored change and attribution are distinct.

Pass-through: Google Ads media and Prolific participant rewards. Identify the third-party charge, invoice, currency and mark-up, plus approval and credit.

Media is passed through at cost, with agency management fees typically 10% to 20% of spend or a flat retainer. Prolific participant rewards are typically set at about £9 an hour, with a platform fee added. Keep media, payment, research participant and subcontractor expenditure separate.

For each mechanism, identify who can inspect the meter, dispute a record and correct an invoice. Capture what happens when a test stops early, a customer refuses optional tracking, an order is refunded or the service crosses a stated limit.

Pricing exposure should follow the contract definition, while measurement keeps its own analytical definition.

Bottom line

The comparison is non-ranked and names no winner. Pricing structures allocate commercial exposure and do not predict value.

Normalise money and risk

For every structure record currency, VAT status, unit, quantity and billing period. Add term, eligibility, limits and overage, then refund, credit, promotion and evidence date.

UK VAT is charged at 20% on standard-rated services, and registration is required above the £90,000 threshold. HMRC's VAT records guidance supplies the record boundary, not tax advice.

Add buyer labour, assurance, integration and support to the supplier charge. Incident, migration and exit costs join them. Price consumer, accessibility, product-safety and privacy work separately. Security and payment work carry their own cost. A model that looks cheaper only because it omits required work is not comparable.

The ranges below are typical 2026 England merchant planning figures, not published price lists. They combine seller list prices where available with labelled estimates for buyer-side work and internal labour. Typical 2026 whole-life ranges for an England merchant on 500,000 eligible sessions a year:

Worked fixed-scope build over 12 months: £4,000 to £15,000 implementation, £8,000 to £25,000 analyst time and £2,000 to £8,000 assurance give a typical whole-life total of £14,000 to £48,000 in year one. Add £5,000 to £20,000 for any migration or exit.

Run sensitivity on quantity, term and internal labour one field at a time. Do not alter a tax assumption to make a route look favourable. Procurement records the commercial comparison; finance records the approved accounting view; the decision owner records whether operational exposure is acceptable.

The decision record can admit structures to negotiation, retain the current route or hold. Buyer weights, acceptance limits and service thresholds remain blank until approved with evidence.

Before you act

Common questions

What does the article say about the relationship between pricing structures and value?

It measures seven structures on identical meters and whole-life cost, so price alone does not show value. A low headline sum may exclude ongoing monitoring or correction.

How should a buyer handle a supplier meter that cannot be reconciled?

Use one volume record across all structures. If a supplier meter cannot be reconciled to that record, mark its exposure unknown.

What must an outcome-linked structure name before it is payable?

It must name the payable event and the counterfactual needed to show causal incrementality. Raw order growth, platform attribution or a conversion-rate change is not sufficient.