By Steve Merrill, Founder of WRKNG Digital | July 31, 2026
How do you know if your Shopify brand is overpaying its agency?
You are overpaying when the agency charges a percent of spend with no proof of incremental value, hides behind vague reporting, hands your account to a junior team, stops testing, and has no plan for AI-driven shopping. Any one of these is a warning. Two or more means you are funding overhead, not growth. Here are the five signs, in order.
1. You pay a percent of ad spend with no incremental value
The most common overpay is a percent-of-spend fee that rewards the agency for spending more, not selling more. I spent over $5M of my own money on Facebook ads, and I can tell you the platform does most of the targeting for you now. If the agency can't show you the sales that would not have happened without them, you are paying for a coin flip. Meta's own Advantage+ shopping campaigns automate the bidding and targeting they used to charge you to manage.
2. Reporting is vague and you have no clear KPIs
Data does not lie. If your monthly report is a screenshot of "impressions up 12%" with no revenue, no cost per acquisition, and no target you agreed to, that is on purpose. A real report ties spend to blended ROAS, new-customer CAC, and contribution margin. Compare your numbers to the WordStream Facebook advertising benchmarks and the Google Ads benchmarks. If they can't tell you where you stand against those, they don't know.
3. A junior team does the actual work
You met the senior strategist on the sales call. Then a 23-year-old you never met runs your account. That's the bait and switch. The person building your campaigns should be someone you can name, and their experience should match what you are paying. Ask who touches the account day to day, and ask on the next call to speak with them directly.
4. No testing and your creative is stagnant
If you are running the same three ads you were running six months ago, you are burning money. Creative is the biggest lever left in paid social, and it dies fast. A good team ships new hooks, angles, and formats every week and kills the losers. Shopify's own guide on A/B testing lays out why a store that stops testing stops improving. No test calendar means no growth engine.
5. No AI-commerce or AEO roadmap
People are using AI to shop more now than ever, and most agencies have no answer for it. Buyers are asking ChatGPT and Google's AI what to buy before they ever hit your product page. If your agency can't explain how your brand shows up in those answers, they are managing the past. Google's product structured data is the baseline for getting your catalog read by AI, and answer engine optimization is how you get cited in the recommendation. That's the question every ecommerce brand has right now, and few agencies can answer it.
What a fair arrangement looks like
A fair deal is a flat fee or a fee tied to incremental results, not a cut of whatever you spend. You get clear KPIs you agreed to, reporting that shows revenue and margin, a named senior person on your account, a weekly testing calendar, and a real plan for AI-driven shopping. We do not promise specific results. We promise exactly what our team will do, and we show you the numbers every month.
How We Chose These Signs
These five come from running a $10M ecommerce brand, spending over $5M in ads, and auditing agency relationships for Shopify stores. Each sign is one I have either paid for or watched a client pay for. If you recognize more than one, it's time for a hard conversation.
FAQ
Q: Is a percent-of-ad-spend fee ever fair?
Rarely, and only at high spend where the fee still maps to real work. For most Shopify brands, a flat fee or a results-based fee aligns the agency with your profit instead of your budget.
Q: What KPIs should my agency report every month?
Blended ROAS, new-customer CAC, contribution margin, and progress against a target you both agreed to before the month started. Impressions and clicks alone are not KPIs.
Q: How do I know if a junior team is running my account?
Ask directly who builds and manages your campaigns day to day, then ask to speak with that person. If the agency dodges or keeps routing you to the salesperson, that's your answer.
Q: What is AEO and why does my Shopify brand need it?
AEO is answer engine optimization, the work of getting your brand recommended inside AI answers from tools like ChatGPT and Google's AI. Shoppers increasingly ask AI what to buy, so a brand with no AEO plan is invisible at the moment of the recommendation.
Q: Should I fire my agency if I see one of these signs?
Not on one sign alone. Start with a direct conversation and clear asks. If two or more signs hold and nothing changes after you raise it, move on.
Want a plain read on whether you're overpaying and where AI shopping fits your brand? See how WRKNG Digital handles agentic commerce: https://wrkngdigital.com/agentic-commerce-landing-page.
By Steve Merrill | July 31, 2026
