Conversion Engineering

What Conversion Rate Optimization Costs

Published pricing is unusual in this category, which is itself informative. Here is what we charge, what drives the number, and the conditions under which this work does not pay for itself.

The short answer

Conversion rate optimization is typically sold as a monthly retainer, a project fee, or performance-based pricing. Retainers in the market commonly run from roughly $2,000 to $20,000 per month depending on scope, traffic volume, and whether the firm can implement changes or only recommend them. Smith Network Solutions engagements begin at $3,000 per month and include implementation, because a recommendation nobody ships has no value. The work is worth doing when the revenue at stake in the funnel is large relative to that fee — which in practice means meaningful traffic and meaningful ad spend.

The three pricing models, and what each one selects for

A monthly retainer buys continuous capacity: diagnosis, implementation, and measurement in an ongoing cycle. It fits conversion work well because the work compounds and because the measurement layer needs a permanent owner. Its weakness is that it can drift into activity without outcomes if nobody is holding it to a number.

Project pricing fits a defined scope — a tracking rebuild, a checkout overhaul — and is cleaner to buy. Its weakness is that conversion work reveals its next priority as it goes, so a fixed scope written in advance is frequently the wrong scope by week three.

Performance-based pricing sounds ideal and is usually structurally unworkable. Attribution disagreements are inevitable, the agency's incentive is to claim credit for lifts that came from elsewhere, and the arrangement discourages exactly the unglamorous infrastructure work — tracking rebuilds, performance fixes — that produces the largest durable gains. We do not offer it, and we are skeptical of firms that lead with it.

What drives the number

Two engagements at very different prices are usually different in scope rather than in quality. The variables that move it most:

  • Whether the firm implements or only recommends — implementation is most of the cost and all of the value
  • Traffic volume, which determines how much can be tested versus reasoned about
  • Technical complexity: a headless multi-region storefront is not a single-domain Shopify store
  • The state of your measurement layer, since a rebuild is front-loaded work
  • Whether CRM and offline revenue integration is in scope
  • Compliance constraints — healthcare and financial data handling add real engineering

What a $3,000 per month engagement includes

Our engagements start at $3,000 per month. That covers ongoing conversion engineering: continued measurement ownership and regression monitoring, a diagnostic cycle that produces prioritized findings, implementation of the fixes in your codebase, and reporting against revenue rather than against activity.

Larger engagements scale with implementation volume rather than with meeting frequency. A store with a complex custom checkout, several domains, and a CRM integration requirement will run higher because there is more to build, not because there is more to discuss.

The initial conversion audit is free for qualified businesses. If we do not think we can find enough to justify the fee, we will tell you at that point rather than after the first invoice.

When this is not worth buying

We turn down work regularly, and it is worth being explicit about when. If your site gets very little traffic, there is not enough signal to diagnose anything and your money is better spent on acquisition. If your problem is that the traffic is unqualified, conversion work on the site cannot fix a targeting problem. If your product does not sell for reasons unrelated to the funnel, no amount of instrumentation changes that.

The clear case for this work is a business already spending meaningfully on traffic, with a funnel nobody has audited, where a relative improvement in conversion rate is worth multiples of the fee. That describes most of the companies that come to us, but not all of them.

Most CRO agencies test. We instrument, then engineer.

A typical conversion agency starts by A/B testing things it can change without a developer — headlines, button colors, hero images. That work has a ceiling, and it is low. We start somewhere else: we rebuild your measurement layer until the data is actually trustworthy, then read the user journey end to end and find where revenue is leaking. Usually it is not the headline. It is a checkout step that fails silently on mobile Safari, a shipping estimate that appears after the payment form, a third-party script blocking interaction for four seconds, or a purchase event that has been double-firing for a year and quietly ruining every optimization decision your ad platform makes. Those are engineering problems. We are engineers, so we fix them in your codebase rather than filing a ticket and waiting.

Frequently asked questions

Do you offer performance-based pricing?
No. Attribution disputes are unavoidable, and the model discourages the infrastructure work — tracking rebuilds, performance engineering — that produces the largest durable gains but is hardest to claim credit for. We charge a retainer and report against revenue.
Is there a minimum commitment?
We ask for three months, because the first month is disproportionately diagnosis and rebuild, and judging the engagement before any of the fixes have been live is not a fair test for either side.
What is included in the free audit?
Validation of your analytics against your source of truth, a segmented funnel analysis, and identification of the largest leak with the evidence behind it. It is a real two-week investigation for qualified businesses, not a sales call with a template attached.
How do we know whether it is working?
We agree on the primary metric before starting — usually revenue per session or qualified leads per spend rather than raw conversion rate, since raw rate can be improved by making traffic worse. Then we report against it monthly with the underlying data available to you.

Find out whether this is worth it for you

The audit is free, and if the numbers do not support an engagement we will say so.

Related reading

Conversion Engineering for Ecommerce and Paid-Traffic Sites