The Test Bench240 guides, 20 benches
Conversion.sale
The Test Bench - a field guide to conversion for small online businesses
Home / Bench 01 - CRO foundations and measurement / Guide

Choosing What to Fix First: A Prioritisation Method for Small Stores

You cannot fix everything, and the order matters. A simple scoring method sized for one person's time: size of the leak, certainty of the evidence, and cost of the fix, in that order of honesty.

Published 24 October 2026Evidence checked on 24 October 2026Small online stores, global English edition

The short answer

Prioritise by three factors, scored roughly and honestly: how many buyers the problem plausibly costs (traffic reaching the step times the size of the drop), how sure you are the problem is real (evidence strength, from a guess up to recordings of people failing), and what the fix costs in time and risk. Work the top of that list, one or two items a month, and re-score monthly as the funnel changes. The method matters less than the discipline: a written order, defended by numbers, beats a month of fixing whichever page annoyed you most recently.

Factor one: the size of the leak

A problem's cost is bounded by the traffic that meets it. A confusing returns policy read by 30 people a month cannot cost more than 30 decisions; a slow product page seen by 3,000 can cost hundreds. Estimate the leak as: sessions reaching the step, times the shortfall you believe exists. You will not know the shortfall precisely - a step rate visibly below its neighbours, or recordings of repeated failure, are enough to rank. Precision is not the point; order of magnitude is. Big leaks first is the whole of factor one.

Factor two: how sure are you

Rank evidence in this order: people observed failing (recordings, usability sessions, support complaints quoting the page) beats step-rate anomalies, which beat heatmap impressions, which beat a competitor doing it differently, which beats a blog post saying everyone should. Weak-evidence items are not banned - they are queued behind strong-evidence ones, or converted into research tasks: watch ten recordings of the page before rebuilding it. This factor is where small stores save the most time, because most fix lists are half folklore.

Factor three: cost and risk of the fix

Cost is your hours plus the chance of breaking something that works. A text change on a product template is an afternoon and reversible. A checkout overhaul on a platform you half-control is a week and touches the page that takes money. All else equal, cheap and reversible goes first - not because it is most valuable, but because a small store's scarcest resource is the owner's attention, and quick certain wins fund the patience for bigger ones. Note platform limits honestly: some checkout fixes are simply not available on some plans, and a fix you cannot ship scores zero however big the leak.

A worked ordering

Illustration: a store's candidate list holds (a) product pages load slowly on mobile, step rate down, fix is image compression - big leak, strong evidence, cheap; (b) add reviews to product pages, currently none, fix is an app and moderation time - medium leak, medium evidence, medium cost; (c) redesign the homepage hero - unknown leak, weak evidence, medium cost; (d) rewrite checkout reassurance copy - small leak, weak evidence, cheap. The method orders them a, b, d, c. Without the method, (c) usually wins because it is the most visible - which is exactly the failure this page exists to prevent.

Re-score on a rhythm, not on a whim

Fix the list monthly, at the same sitting as your baseline review. New evidence arrives (a step rate moved, a complaint pattern formed), finished fixes leave, and the order reshuffles legitimately. What you must not do is re-prioritise mid-month because a podcast mentioned a tactic. The list is a queue, not a mood board. Stores that hold a queue for six months learn their funnel deeply; stores that chase weekly tactics learn nothing twice.

The list you say no to

Every prioritised list creates a second, shadow list: the ideas explicitly deferred. Keep that list written down with a one-line reason - too costly this quarter, evidence too weak, platform cannot do it yet. Deferred ideas have a habit of returning as urgent suggestions in meetings and podcasts; a written deferral with a reason answers them without a fresh argument each time. Review the deferred list at the quarterly re-score: some items graduate when traffic grows or a platform adds the feature, and a few get deleted as the store's shape changes. Prioritisation is as much the discipline of recorded refusal as of selection, and the recorded refusals are what keep a one-person business from spending the year on other people's priorities.

Sources and evidence on the record

Evidence basis: Method guide. Any figure quoted is attributed to a named published source listed below; worked examples are labelled illustrations with round numbers, not measurements. Applies when: Any store with more possible fixes than time to make them

Next on the bench

Bench 01 - Foundations and measurement Conversion Rate Optimisation for Small Stores: Where to Start Conversion rate optimisation, explained for a small store: measure the funnel as it is, fix the leaks the evidence points to, and test changes honestly at small traffic levels. Bench 01 - Foundations and measurement Set a Baseline Before You Change Anything A baseline is the honest before-picture: conversion by device and source over the last 60 to 90 days, written down before any change ships. Without it, every result afterwards is a guess wearing a number. Bench 19 - Funnel leaks by stage Finding Funnel Leaks by Stage: The Working Guide Every funnel leaks at specific stages for specific reasons: arrival, browsing, consideration, cart, checkout, and after the sale. This bench walks the stages in order, one guide each, with the causes that actually occur at each and the evidence that separates them.