Hiring an amazon marketing agency feels like a logical next step when your product listings stop converting or your ad spend starts bleeding into thin margins. But the agency model — built around account managers, monthly retainers, and quarterly reviews — was designed for a different era of digital advertising.
This article explains what an amazon marketing agency actually does, where the model works, where it breaks down, and what SMEs managing Google Ads alongside their Amazon presence should consider instead.
What Does an Amazon Marketing Agency Do?
An amazon marketing agency manages paid and organic visibility on Amazon on behalf of a brand or seller. At its core, that means running Sponsored Products, Sponsored Brands, and Sponsored Display campaigns through Amazon Advertising — adjusting bids, managing keyword targeting, and optimising product listings to improve organic ranking alongside paid performance.
Beyond campaign management, most agencies also handle listing optimisation: rewriting titles and bullet points, improving A+ content, and advising on pricing strategy relative to competitors. Some offer broader brand-building work, including Amazon Stores, video ads, and DSP (Demand-Side Platform) campaigns that reach audiences off Amazon as well.
The agency model typically involves a setup fee, a monthly retainer (sometimes flat, sometimes percentage-of-spend), and reporting on a weekly or monthly cadence. For sellers spending upwards of £5,000 per month on Amazon ads, a specialist agency can add real value — particularly if the account manager has genuine category experience.
That said, it is worth being precise about what you are actually buying. You are paying for human time, not outcomes. Most agencies are managing dozens of accounts simultaneously, and the attention your account receives depends heavily on your spend level and how demanding you are willing to be as a client.
Amazon Advertising Agency vs Google Ads Management
Many SMEs running Amazon shops also run Google Ads — either to drive external traffic to their listings or to support a direct-to-consumer website sitting alongside their marketplace presence. The two channels are structurally different, and conflating them leads to poor decisions about where to invest management resource.
Amazon Advertising is essentially a closed ecosystem. Traffic stays within Amazon, and conversion signals feed back into the same platform. Google Ads operates across search, display, shopping, and YouTube — with conversion data flowing into Google Analytics and requiring a more complex attribution setup. If you want to understand how these channels interact, our guide on how to track cross-platform advertising performance with GA4 covers the attribution mechanics in detail.
The operational differences matter when you are thinking about management. An amazon marketing agency will rarely have genuine depth in Google Ads — and vice versa. Agencies tend to build expertise in one channel and bolt on the other as an upsell. If you are running both channels seriously, you are likely to get better results from dedicated management on each rather than a generalist agency trying to cover both.
For the Google Ads side of the equation, what a Google Advertising agency actually does is a useful starting point for understanding the differences in approach.
| Management Type | Typical Monthly Cost | Response Time | Specialisation | Best For |
|---|---|---|---|---|
| Amazon Marketing Agency | £800–£3,000+ | Weekly/monthly reviews | Amazon-specific | High-volume Amazon sellers |
| Google Ads Agency | £500–£2,500+ | Weekly/monthly reviews | Google ecosystem | Search and display advertisers |
| Freelance PPC Specialist | £400–£1,500 | Variable | Mixed | Budget-conscious SMEs |
| AI Agent (Google Ads) | Low fixed fee | Daily/continuous | Google Ads automation | SMEs needing active management |
How Amazon Agencies Charge (And What That Means for Budget)
Pricing models vary, but the two most common structures are a flat monthly retainer and a percentage of ad spend — typically between 10% and 20%. A percentage model aligns incentives around growth, but it also means your management costs rise automatically as your spend increases, regardless of whether performance improves proportionally.
Flat retainers offer more predictability, but the risk is that a fixed fee creates less urgency to optimise aggressively once the account is set up. After nine years running a marketing agency, the honest observation is that most accounts get the most attention in the first 90 days. After that, the cadence slows unless the client pushes for it.
Setup fees — usually between £500 and £1,500 — are standard and reasonable given the account architecture work involved. Where you should probe is on what ongoing management actually looks like: how many hours per week, who specifically is working on the account, and what their background is in your product category.
For comparison, understanding how much Google Ads costs for SMEs gives useful context on the total investment required when running paid advertising across channels simultaneously.
Where an Amazon Marketing Agency Adds Genuine Value
The agency model is not without merit. For sellers in competitive categories with significant ad budgets, an experienced amazon marketing agency brings category-specific knowledge that is hard to replicate internally. Understanding seasonal bid adjustments, placement modifiers, and negative keyword hygiene at the ASIN level takes time to develop — and mistakes are expensive.
Listing optimisation is another area where agency input earns its cost. A strong agency will know which keywords drive organic rank lift, how to structure A+ content for conversion, and how to interpret search term reports in a way that feeds back into listing copy. These are skills that take years to develop and are genuinely difficult for a small in-house team to match.
Where agencies struggle is responsiveness. Campaign performance can shift quickly — a competitor changes pricing, a keyword suddenly becomes expensive, a campaign starts burning budget on irrelevant terms. Weekly or fortnightly check-ins are not fast enough to catch these changes before they cost money. This is less a criticism of agencies as businesses and more a structural limitation of the human-managed model. You can read more about how to stop wasting budget on underperforming ads to understand the operational gap this creates.
What SMEs Running Google Ads Alongside Amazon Should Know
For SMEs managing both an Amazon presence and a direct-to-consumer Google Ads account, the challenge is not finding one agency that does both — it is finding management approaches for each channel that are genuinely active rather than passively maintained.
On the Google Ads side, this is where an AI agent changes the calculation. Overtime logs into your Google Ads account directly, adjusts bids, pauses underperforming ad groups, reallocates budget toward what is working, and sends you a plain-English summary of what it did and why. It operates daily, not weekly — which means the kind of performance drift that erodes budget over a fortnight gets caught and corrected before it compounds.
This is not the same as an amazon marketing agency, and it is not trying to be. Amazon and Google are different channels requiring different expertise. But for SMEs who have already committed to an Amazon agency for marketplace management and need their Google Ads handled without a second agency retainer, an AI agent is a structurally different option — one that runs continuously rather than on a review cycle.
If you want to understand how the two approaches compare in more detail, best PPC agency or AI agent: what SMEs need covers the trade-offs directly.
The Honest Trade-offs of the Agency Model
An amazon marketing agency is not a bad choice — it is just a specific choice with specific limitations that are worth naming clearly. Agencies work best when you have a meaningful ad budget, a product catalogue with enough SKUs to justify specialist management, and the time to be an engaged client who reviews reports and provides strategic direction.
They work less well when you are a small seller with a tight budget where management fees represent a significant percentage of total spend. They also struggle when you need fast iteration — testing new ad copy, responding to competitor promotions, or shifting budget mid-month based on stock availability. The approval chains and meeting cadences that are a normal part of agency operations are friction when speed matters.
For Google Ads specifically, the gap between what agencies promise and what SMEs actually receive is well-documented. Our article on what a Google PPC agency actually does for SMEs is worth reading before you sign any retainer agreement.
One opinion worth stating plainly: the marketing agency model was built when campaign management was genuinely time-intensive and required a team. Automation has changed that equation significantly — not by replacing strategic thinking, but by handling the repetitive, time-sensitive execution work that once required human hours. Understanding that distinction is the starting point for making a better buying decision.
By 2026, most well-run SME advertising programmes will be using some combination of AI-driven execution and strategic human input — rather than paying for human execution of tasks that software does faster and more consistently. For the Google Ads side of that equation, Overtime's approach to Google Ads management is worth reviewing if you are currently paying an agency primarily for account maintenance rather than genuine strategy.
Finding the Right Amazon Marketing Agency
If you have decided that an amazon marketing agency is the right move for your marketplace presence, the selection process matters more than most sellers realise. Ask for anonymised case studies in your specific category — not generic performance claims. Ask who specifically will manage your account and what their Amazon experience is. Ask what their process is when something goes wrong mid-month.
Verify that the agency is an Amazon Ads verified partner — this is a basic credential that filters out the worst operators. Beyond that, the quality of the onboarding questionnaire is often a reliable signal: an agency that asks detailed questions about your margin structure, competitor landscape, and seasonal patterns before pitching a strategy is more likely to deliver than one that sends a generic proposal within 24 hours.
For the remainder of your paid advertising — search, display, and shopping on Google — consider whether an AI agent handling daily bid management and budget allocation gives you more active management than a second agency retainer would. You can review Overtime's pricing structure to understand what that looks like in practice.
Any amazon marketing agency will tell you they manage Google Ads too. The better question is whether their Google Ads management is genuinely active or simply reported on monthly — and what that distinction costs you in performance over time.
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FAQ
What does an amazon marketing agency do?
An amazon marketing agency manages paid advertising campaigns on Amazon — including Sponsored Products, Sponsored Brands, and Sponsored Display — alongside listing optimisation to improve organic visibility. Most agencies also handle A+ content, keyword strategy, and reporting on campaign performance.
How much does an amazon marketing agency cost?
Most amazon marketing agencies charge either a flat monthly retainer (typically £800 to £3,000 depending on account complexity) or a percentage of ad spend ranging from 10% to 20%. Setup fees of £500 to £1,500 are common on top of ongoing management costs.
Should I use the same agency for Amazon and Google Ads?
Generally, no. Amazon Advertising and Google Ads are structurally different channels requiring different skill sets. Agencies that claim expertise in both tend to have a primary specialism and a weaker secondary offering. Dedicated management — or an AI agent for Google Ads — usually delivers better results than a generalist approach.
Can an AI agent replace an amazon marketing agency?
Not directly — AI agents are currently better suited to Google Ads management than Amazon Advertising, which has a more closed ecosystem. An AI agent can replace or supplement agency management for Google Ads, freeing budget to invest in genuine Amazon specialist support where it adds the most value.
What should I look for when choosing an amazon marketing agency?
Prioritise agencies with verifiable experience in your specific product category, a clear account management structure, and Amazon Ads partner status. Ask who specifically works on your account day to day, what their escalation process is, and how they handle performance drops between monthly reviews.