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Monthly Installment as the Headline Price A/B Test

A monthly installment amount can help shoppers evaluate a higher-priced purchase against a monthly budget.

  • Product page
  • Revenue per visitor (RPV)

Control vs Variant

How hard the same message is pushed is the variable.

Changed
Emphasis
Page
Product page
Difference
changed

Hypothesis

If they mistake it for the full cost, the same emphasis may lead to complaints or cancellations. Change the price hierarchy while keeping the total payable and existing financing terms clear.

How to run this test

Primary metric

Revenue per visitor (RPV)

Use revenue per visitor as the primary metric, even if highlighting installments increases conversion.

Other metrics

  • Purchase conversion rate (CR)Read purchase rate alongside revenue per visitor.
  • Installment selection rateMeasure whether shoppers actually choose installments.
  • Cancellation and return rateTrack both over the same follow-up period.
  • Price transparency contactsTrack whether price-related support contacts increase.

What to check before and during the test

  • HierarchyCompare total price as the main price with installment amount as the most prominent price detail.
  • Total costShow the total payable clearly next to the installment amount.
  • FinancingKeep installment count, eligibility, fees and defaults unchanged.
  • Price bandsReview predefined price bands relevant to the catalog; do not invent a universal threshold.
  • DeviceCheck the presentation on desktop and mobile.

Setup mistakes to avoid

  1. 1Do not hide the total amount payable.
  2. 2Do not show installment counts that are not available for the product.
  3. 3Do not change installment presentation and installment count together.
  4. 4State any financing cost when quoting installment amounts.
  5. 5Keep installment tables from pushing the CTA down the page.