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What does an ecommerce marketing agency cost?

By cartscaling Reviewed 5 min read

The short answer

It depends on which levers need work and how much volume you have, which is why we write the plan first and quote against it. Expect a base fee plus growth share scoped to agreed work, month to month, with ad spend, tools and creative production budgeted separately. Judge the fee against contribution, not revenue.

The price follows the scope, so the scope has to exist first

Any figure quoted before someone has looked at your store is a guess. The work needed to fix a product feed, the work needed to rebuild a checkout, and the work needed to build email flows are different in size, and a store doing a few hundred orders a month is a different job from one doing thousands.

So the honest answer is that it depends on which of the four levers need work, how much volume you have, how many channels are involved and how much of the work is one off versus ongoing.

That is why we write a free plan first. It sets out where the revenue is leaking, the first three fixes in order, and what we would leave alone. The quote then attaches to that scope, so you can read what you are paying for rather than buying a category of service.

When you are comparing what you have been quoted, insist on the same clarity from anyone. What is included each month. What counts as extra. Whether tools and platforms are billed on top. Whether creative production is included or separate. What notice applies. A price with those answers attached can be evaluated. A monthly figure with a channel name next to it cannot.

And be careful about buying by size of number. A low fee that covers a narrow scope can cost more overall than a higher one that covers the work you actually need, and the difference only shows up three months later.

The common pricing shapes and what each one encourages

There are four or five structures in common use, and the useful question is not which is cheapest but what each rewards.

A percentage of ad spend rises when budgets rise. It suits a store that is confident the answer is more media, and it makes the advice to spend less, or to move money out of ads and into fixing the site, awkward for the person giving it.

A share of revenue ties the fee to sales, which sounds aligned and in practice creates a monthly argument about which orders count. Attribution is contested even between platforms, so a commercial arrangement that depends on it invites disagreement.

Hourly billing rewards time spent and makes the cost unpredictable, which suits advisory work more than continuous operations.

A project fee rewards finishing a defined piece of work, which is a good fit for a rebuild, a migration or a feed overhaul, and a poor fit for something that needs attention every week.

A base fee plus growth share, scoped to agreed work, rewards doing that work and keeps the advice independent of the budget. It is what we use: a base monthly fee for the scope in your plan, plus a capped growth share on revenue we add, month to month, no percentage of ad spend and no percentage of the sales you already make, only a capped growth share on revenue we add above your baseline, and every dollar of ad spend going to the ad platform.

Whichever structure you pick, write down what happens when the scope changes, because it will.

The costs that sit alongside the fee

The management fee is one line in a bigger number, and stores that budget only for the fee run short in month two. Build the whole cost before deciding what you can afford.

Ad spend is the largest and it is separate. It goes to the platforms directly, on your own billing, and it should never be paid through an intermediary if you can avoid it, because that is also how account ownership gets muddled.

Creative production is the one most often forgotten. Photography, video, editing, and the content for email all cost money or time, and campaigns that run out of creative quietly get more expensive. Put it in the budget as its own line.

Tools and platforms are next: the email and text platform priced by list size, review and subscription apps, analytics or feed tools, and anything in the store that charges per order. List them, because several of them scale with growth.

Then internal time. Someone at your end has to approve things, supply product information, make decisions and answer questions. A relationship with nobody assigned on the store's side stalls, and that delay costs more than any fee.

Finally, plan for the timing. Most work takes a few weeks before it shows up in the numbers, and some, particularly search visibility and repeat purchase flows, takes longer. Budget for a runway that lets the work land rather than for a single month, and agree what will be reviewed and when.

How to tell whether the fee is paying for itself

Judge the total, over a sensible window, against contribution rather than revenue.

The simple version: add everything you spend on marketing in a month, including the fee, the media, the tools and the production. Compare it with the gross profit generated, which is revenue minus cost of goods, shipping and payment fees. If profit after all of that is rising, the arrangement is working. If revenue is rising and profit is not, something is being bought too expensively.

Use a window long enough to be meaningful. A month is short, especially where the work includes anything on search visibility or repeat purchases. A quarter is usually the right unit for a verdict, with monthly checkpoints on the specific measures attached to each fix.

Also track the things that are not this month's revenue but decide next year's cost: the share of customers who come back, the number of visitors arriving without being paid for, the size of the email list and whether it is being opened. A provider improving those is building something that lowers your costs later. One who only moves paid revenue is renting you growth.

And keep the ability to stop. Month to month terms mean the arrangement is reviewed constantly by both sides, which is uncomfortable and honest. If the work is good it continues, and if it is not you keep everything that was built, in accounts that are already in your name.

One thing no fee should include is a promise about results. Nobody controls the auction, the season, or your competitors.

Worked example, not a result

A monthly marketing budget, all lines included

Ad spend, paid direct to the platforms
$12,000
Management fee, flat and scoped
$3,500
Creative production
$1,500
Email and text platform
$400
Feed and analytics tools
$200
Total marketing cost
$17,600
Revenue in the month
$88,000
Marketing cost as a share of revenue
20 percent

Worked example, not a result

Related questions

Because the work depends on which levers need fixing and how much volume you have. We write the plan first, free, and quote against the scope in it, so the price attaches to specific work rather than to a service category.

It is a structure, not a scandal, but it prices management by budget rather than by work and makes reducing spend costly to recommend. We use a flat scoped fee instead so the advice does not change with the budget.

Ad spend paid directly to the platforms, creative production, your email and text platform, any feed or analytics tools, and internal time to approve work and supply product information. The fee is usually the smaller half of the total.

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