Mtrix vs a CRO agency
Every agency price below was read from a published pricing page or pricing guide on 26 July 2026, and each one is attributed inline.
The verdict
At a glance
| Dimension | Mtrix | CRO agency retainer |
|---|---|---|
| Best for | DTC brands $1M–$50M with a growth operator who will run tests, and who want build, test and measure in one platform | Brands with no internal owner for experimentation, or who need senior strategy they can't hire |
| What you're buying | Software your team operates | Someone else's hours, against a defined scope |
| Published price | Custom — talk to us | $2,500–$25,000/mo across small to substantial retainers (ShopExperts, 1 Jun 2026). Two agencies that publish their own: Netalico $2,700–$10,000/mo, average client ~$4,500; OuterBox $3,000–$15,000/mo |
| Testing tools | Included. One subscription, one script | Usually billed on top. ClicksGeek tells buyers to ask agencies directly whether tool costs are included, and puts them at $2,000–$10,000+/mo (14 Apr 2026) |
| Tests per month | No cap. Not concurrent, not monthly, not by plan | 1 test at $2,500–$5,000/mo · 2–3 at $5,000–$10,000 · 3–5 at $10,000–$25,000 (ShopExperts, 1 Jun 2026) |
| Minimum term | None. Monthly or annual, your choice | 3–6 months with 30-day notice is standard (ClicksGeek, 14 Apr 2026); Convert.com recommends 6–12 months (3 Apr 2026) |
| Time to first test live | About five minutes to configure a test and take it live, once Mtrix is on your store | 60–90 days to early wins, per Netalico's and OuterBox's own pages |
| Who runs the tests | Your team. Mtrix provides onboarding and support — it does not run experiments for you | The agency's team |
| Session replay, heatmaps, error tracking, Core Web Vitals | All four, in the platform, on the same script | Agency-dependent, and typically separate tool subscriptions inside that $2,000–$10,000+/mo |
| When you stop paying | The tests, the data and the audit trail stay in your account | The testing stops. The roadmap goes with them |
| What it replaces | Testing tool + replay tool + heatmap tool + analytics tool + error tracking | — |
Two rules in that table. Agency figures are real numbers read from the publisher's own page on 26 July 2026, each attributed in the cell. Mtrix doesn't publish a list price, so it says so rather than inventing a band.
What a CRO retainer costs in 2026
Nobody quotes one number, so here is the published range, by source, with dates.
Agencies that publish their own rates:
| Agency | Retainer | Their own wording |
|---|---|---|
| Netalico | $2,700–$10,000/mo | "with the average client around $4,500" |
| OuterBox | $3,000–$15,000/mo | "scoped to traffic, risk, and opportunity" |
Published market ranges:
| Source | Entry | Mid | Top |
|---|---|---|---|
| Convert.com (3 Apr 2026, citing Invesp) | $2,000–$5,000/mo | $6,000–$8,000/mo | starts at $10,000/mo; "most … around $16,000 per month with some charging upwards of $30,000" |
| ClicksGeek (14 Apr 2026) | $2,000–$5,000/mo | $5,000–$15,000/mo | $15,000–$50,000+/mo |
| ShopExperts (1 Jun 2026) | $2,500–$5,000/mo | $5,000–$10,000/mo | $25,000–$100,000+/mo |
| conversionrate.store (2026) | $5,000–$8,000/mo (smaller agencies) | $6,000–$18,000/mo (ecommerce) | $15,000–$35,000+/mo |
Four independent publishers, and the mid-market band lands in the same place every time: roughly $5,000 to $15,000 a month. That's the band a $5M–$50M DTC brand gets quoted.
The number nobody puts in the proposal: cost per test
Retainers are sold by the month. They're delivered by the test. Divide one by the other and the engagement looks different.
ShopExperts (1 Jun 2026) publishes both halves:
- $2,500–$5,000/mo buys 1 test per month → $2,500–$5,000 per test
- $5,000–$10,000/mo buys 2–3 tests per month → $1,700–$5,000 per test
- $10,000–$25,000/mo buys 3–5 tests per month → $2,000–$8,300 per test
What one test costs, by who's publishing the numbers
Same question, two published answers. The axis is fixed across both, so the disagreement is the thing you see.
Every figure above is the division the copy prints on this page, from each publisher's own page on the date shown. ClicksGeek's $2,000–$5,000 band publishes a test count but no per-test figure, so this chart shows none.
ClicksGeek (14 Apr 2026) is more generous on velocity — $5,000–$15,000/mo for six to ten tests, which works out at $500–$2,500 per test. Take the friendlier of the two and you are still paying four figures to find out whether a headline change moves add-to-cart rate.
That price does something to how you work, and it's the part worth sitting with. You stop proposing cheap tests. The button colour, the third bullet in the shipping copy, the order of the variant selector — none of them survive a $2,000 unit cost, so they never get written into the sprint. The retainer doesn't just cap your test count. It edits your list before you see it.
On Mtrix there is no cap on experiments — not concurrent, not monthly, not by plan tier. Test velocity comes down to your traffic and your team's time. A test that seems unlikely to win costs you the ten minutes it takes to build, which means you run it, because occasionally the unlikely one is worth more than the whole roadmap.
What the retainer doesn't include
Three things routinely sit outside the monthly number. Ask about all three before you sign.
1. The testing tools. ClicksGeek — an agency-side publisher, which is what makes this worth citing — tells buyers to put the question to agencies directly: "Are testing tool costs included, or are they additional?" They put tool spend at $2,000 to $10,000+ monthly and work the example: "If you're quoted $6,000 monthly but need to add $3,000 for tools, your real investment is $9,000." ShopExperts puts the same tools at $100–$2,000+/mo depending on your traffic and which features you need (1 Jun 2026).
2. The term. Three to six months minimum with 30-day notice is standard (ClicksGeek, 14 Apr 2026). Convert.com recommends six to twelve (3 Apr 2026). You're committing before the first result lands, because the first result doesn't land for a while — which is the third thing.
3. The ramp. Netalico: "Most brands see early wins within the first 60 to 90 days from quick fixes uncovered in the audit." OuterBox: "Many clients see early measurable movement within 60 to 90 days." Both are on the agencies' own pages, both are honest, and both describe two to three months of paid audit and roadmap before a test result exists.
Mtrix inverts the ramp rather than shortening it. Once the platform is on your store, you can configure an experiment and take it live in about five minutes. That doesn't make the first answer arrive faster — statistical significance still takes four to six weeks at adequate traffic (ClicksGeek, 14 Apr 2026), and no vendor can shorten arithmetic. It means the clock starts on day one instead of day sixty.
What an agency does that Mtrix does not
This is the honest part, and skipping it would make the rest of the page worthless.
An agency does the work. Mtrix does not. There is no managed tier, no done-for-you service, no strategist assigned to your account. Mtrix provides onboarding and support. If nobody on your team will own experimentation, buying a platform gets you a login that nobody opens, and you will have spent the money and learned nothing. Buy the agency.
Knowing what to test is the scarce skill, and it isn't in the software. A good CRO strategist has run hundreds of tests across dozens of stores and has seen your checkout failure thirty-nine times. Your team has seen it once, on your store, and can't tell whether it's a pattern or a Tuesday. No feature list substitutes for that.
Agencies staff research a platform can't automate — moderated user testing, survey design, heuristic review, qualitative session analysis at volume.
There is a named person accountable when the number doesn't move. Software has no opinion about your quarter.
If those four paragraphs describe your gap, the rest of this page is not for you, and the right next step is a retainer — ideally one that lets you keep the testing platform.
What Mtrix does that a retainer does not
The tests keep running when the invoice stops. A retainer is rented capability. Cancel in month seven and you keep a folder of PDFs. The experiments stop, the roadmap leaves with the strategist, and the tool subscription that was buried in the retainer stops too. On Mtrix the experiments, the results and the audit trail live in your account.
Four things a testing retainer usually doesn't cover at all. Session replay, heatmaps, error tracking, and real-user Core Web Vitals aren't experimentation, so they aren't in scope — they're four more subscriptions inside that $2,000–$10,000+/mo tool line. Mtrix runs all four on the same script that runs the tests, which is what makes them worth having together: a test loses, you open the sessions from the losing variant, and you watch the reason. Heatmaps show you the block nobody scrolled to, sitting directly above your add-to-cart.
Tests that don't collide. Audience targeting buckets on the server and makes overlapping tests mutually exclusive, so running eight at once doesn't corrupt all eight. That is the mechanism that makes an uncapped test count useful rather than dangerous.
Server-side bucketing. Tests run server-side with no flicker and no flash of original content — which also means no events lost to ad blockers and tracking prevention.
Traffic that doesn't go to waste while you wait. Multi-armed bandit allocation shifts traffic toward winners while the test is still running, and Mtrix reads many tests at once either as the winning combination or as each test on its own.
A test you can build without a developer. Experiments are created from the visual editor — A/B, multivariate, split URL and mask URL — so the queue in front of your next test is your own calendar, not a sprint.
Choose one, or choose both
Choose a CRO agency if you have no internal owner, you need senior strategy more than you need throughput, your gap is knowing what to test rather than being able to test it, or you need moderated research your team can't run.
Choose Mtrix if you have a growth operator who will own this, your test list is longer than your budget for tests, you're already paying for a testing tool plus a replay tool plus an analytics tool, or you want the tests to keep running through a quarter when the retainer wouldn't have been renewed.
Choose both if you're at the point most $5M+ brands reach: the agency brings the hypotheses and the judgement, and it runs them on your platform instead of billing you for tooling you don't keep. The retainer covers strategy and analysis. The subscription covers the software, and it's yours when the engagement ends. Mtrix runs on the store you already have, so nothing about this requires your agency to change how they work — talk to us about it, and bring them to the call.
Before you spend anything: do you have the traffic?
This applies to both options, and the agency-side publishers are the ones who say it plainly.
ClicksGeek (14 Apr 2026): you want at least 10,000 monthly visitors for effective A/B testing, and four to six weeks to reach statistical significance at adequate traffic. ShopExperts (1 Jun 2026) is blunter — "Below 10,000–20,000 monthly sessions on key pages, most CRO investment is premature," with 15,000+ monthly sessions the floor for a retainer.
If you're under that, a $5,000/mo retainer is not a slow investment, it's a wasted one — you can't reach significance, so you can't learn anything, so you're paying for opinions with a report attached.
What still works below the testing threshold is everything that doesn't need statistics: watch the sessions where people bailed, find the errors nobody reported, and fix the pages that are slow on the speed your shoppers actually lived rather than on a lab score. You don't need 15,000 sessions to see a form field that fails silently. You need one.
What vendor pages leave out
Consolidation is a trade, not a free lunch. A best-of-breed stack wins on individual feature depth. If your analyst lives in Amplitude and your team has built two years of dashboards there, one platform doing five jobs is a downgrade in one of them.
"No cap on tests" is not the same as "run a hundred tests." Traffic is the binding constraint, not licensing. Most DTC stores can support a handful of well-powered tests at once, and running more than your traffic supports produces confident-looking noise.
Agency retainers are not overpriced. Look at the arithmetic honestly: at $8,000/mo you're buying senior time in a discipline where the good people are scarce. The price is what people cost. The question isn't whether the rate is fair — it's whether you're buying hours or buying capability, and whether you keep anything when it ends.
Mtrix doesn't publish a list price. The owner's call, and worth naming rather than hiding. What we'll say here: it's a single subscription with no separate tool bill, and it costs less per month than the mid-market retainer band above. Built for brands where a percentage point of conversion is worth more than the subscription. Ask us for the number.