TL;DR: Decide task by task, not as one package. Work that needs product knowledge and your voice (product pages, review replies, emails, the fact sheets behind them) usually stays with the owner. Work that needs specialist skill but little product knowledge (paid ad setup, feed clean-up, theme changes) is reasonable to buy. Price both options with the same formula, including the hours you still spend briefing an agency.
The agency's first batch of ads for a small outdoor-gear store looks sharp. One headline calls a three-season tent "fully waterproof in any storm". Another shows the wrong colour of a sleeping bag. The owner, who chose every product in the store and wrote most of the product pages, spends two evenings correcting copy he paid someone else to write.
Hiring a Shopify store marketing agency is usually framed as cost against expertise. For a store where the owner still writes the product pages, a more useful question is who knows the products well enough to make claims about them. This article is part of our guide to marketing strategies for a small Shopify store.
How this was made: written by Miriad with AI assistance and checked against the sources listed at the end.
How do you decide between a Shopify store marketing agency and in-house?
Split the work by whether it needs product knowledge. Anything that makes a claim about a product (descriptions, ads, emails, replies) needs someone who knows the range, so keep it in-house or tightly briefed. Anything technical (ad account setup, feed fixes, theme work, tracking) can be bought. Most small stores end up with a mix.
The mistake is buying "marketing" as one monthly package. A package bundles tasks that need very different knowledge. A good paid-ads specialist does not need to know why one rain jacket has taped seams and another does not. The person writing the ad copy for that jacket does, or needs a quick line to someone who knows.
A practical test for each task: if it goes wrong, who notices first? If the answer is a customer or the owner, the task needs product knowledge. If the answer is a dashboard, it probably does not.
Which marketing tasks need the owner's product knowledge?
Product pages, ad copy, email content, review replies and social captions need product knowledge, because each one makes claims a buyer can test. Ad account structure, Merchant Center feed fixes, theme changes, tracking and reporting need technical skill instead. The table sorts the common tasks for a small store.
| Task | Product knowledge needed? | Sensible owner |
|---|---|---|
| Product pages and fact sheets | Yes, every claim | Owner writes or checks |
| Ad copy and creative | Yes, claims and visuals | Agency drafts from owner's facts |
| Email flows and campaigns | Yes | Owner, with AI drafting |
| Review replies | Yes, and tone | Owner |
| Google Merchant Center product feed fixes | Partly, titles and attributes | Agency or freelancer, owner checks titles |
| Paid ad account setup and bidding | Little | Agency or freelancer |
| Theme and page-speed work | No | Developer |
| Tracking and reporting | No | Agency, or the platform's own reports |
The feed sits in the middle because it has firm technical rules and product content. Merchant Center requires attributes such as id, title (up to 150 characters), description, link, image link, availability, price and brand, and titles may not carry promotional text like "free shipping" (Merchant Center Help). An outside specialist can fix the structure; the owner should still read the titles.
What does each option really cost?
Compare both options with the same formula: hours spent times the value of an hour, plus fees and tools. An agency's fee is visible; the owner's briefing and review hours are not, and they rarely drop to zero. In-house work has no invoice, but it has evenings. Put numbers on both before deciding.
In-house monthly cost = owner or staff hours × value of an hour + tools
Agency monthly cost = agency fee + owner hours for briefs and reviews × value of an hour + tools the store still pays for
Example (illustrative, not a real case): the outdoor-gear owner values an hour at 35 (in his currency). In-house, he spends 24 hours a month on marketing and pays 80 for tools: 24 × 35 + 80 = 920. An agency quotes a fee of 1,500 for ads and email, and he estimates 8 hours a month of briefs and corrections, plus 40 in tools he keeps: 1,500 + 8 × 35 + 40 = 1,820. A third option, a freelancer for ad setup and feed fixes only, costs 400 and saves him 10 hours: 400 + 14 × 35 + 80 = 970.
The numbers are invented for the example; use your own quotes and hours. What the frame makes visible is the part a fee hides: the owner hours an agency still needs, and the hours a narrow task actually frees.
Peak season changes the sum, because online demand bunches into November and December. US online holiday spending (1 November to 31 December) reached $257.8 billion in 2025, up 6.8% on the year before, according to Adobe. For a small store, more orders in those weeks mean more packing hours. If you buy outside help for one period only, November and December are where the owner's hours are scarcest.
What should you ask an agency before signing?
Ask who writes the product claims and what they need from you, how they handle claims they cannot verify, which tasks are included and which are not, what they will report, and what happens to your accounts if you leave. Then ask to see ads and product copy they wrote for other small stores.
- "Who writes our ad copy, and what do you need from us?" A good answer names a person and asks for your fact sheets.
- "What do you do with a claim you cannot check?" It should be "we ask you", not "we make it sound good".
- "Which tasks are in the fee, and which are extra?" Get it as a list.
- "What will the monthly report show?" Orders, conversion rate and average order value by channel, not only clicks and reach.
- "Who owns the ad accounts, the feed and the creative files?" The store should.
- "How do you handle discounts and price claims?" They should know the price-display rules for "was" prices in every market you sell to.
A proposal that promises a sales figure or a fixed return on ad spend is a sales document. Nobody controls those outcomes.
What does keeping marketing in-house require?
One person who owns it, a few fixed hours each week, and three documents: product fact sheets, a voice sheet and a rules sheet. With those, AI can draft most of the writing and the owner checks. Without them, in-house work drifts just as agency work does, only more quietly.
AI use is still unusual in retail, so do not assume a competitor already has this routine. In 2025, 15.46% of EU retail enterprises with 10 or more people used at least one AI technology, against 19.95% across all sectors, per Eurostat. Smaller stores are not in that figure.
The documents are what make in-house work hand-over-able. If you later hire an agency or a freelancer, you give them the same three sheets on day one, and they start from your facts instead of guessing. For the product-page side, see product descriptions for hundreds of products. For the email side, see email marketing for a Shopify store.
What are the warning signs in an agency's work?
Product claims you never made, ads that look the same as those of their other clients, discount wording with invented "was" prices, reports that show reach but not orders, and accounts registered in the agency's name. One of these is a reason to ask questions. Two or more suggest the agency is not working from your products.
Check the creative against your product pages before anything goes live. A simple rule in the contract helps: no new product claim is published without the owner's written yes. It costs the agency a day's delay at most and saves you the evenings spent correcting copy after it has run.
For the full plan, return to the Shopify store marketing guide.
If you want ad hooks and formats you can brief an agency with, or run yourself, we are building the Ad Creative Hooks & Formats Pack. Get notified when it launches.
FAQ
Is a Shopify specialist agency better than a general one?
Not automatically. Platform experience helps with technical tasks such as theme work, apps and feed setup. For copy and ads, what matters is whether the agency asks for your product facts and checks claims with you. A general agency that works from your fact sheets can do better than a platform specialist that reuses the same ad templates for every store.
What marketing should a small store never outsource?
Keep the product facts and the final approval of any product claim in-house. That covers product pages, ad claims, discount wording and replies to reviews. You can outsource drafting, design and technical setup, but the person who knows the products should approve every claim, because buyers, platforms and regulators will hold the store responsible, not the agency.
When does it make sense to hire an agency?
When there is a specific technical job you cannot do, such as setting up paid ads or fixing a broken feed, or when the owner's hours are worth more elsewhere during peak season. It makes less sense as a general fix for not having time to write, because the agency will still need your product knowledge and review time for every claim it publishes.
Sources
- Product data specification — Google Merchant Center Help, accessed 2026.
- Holiday shopping season drove a record $257.8 billion online — Adobe, 2026.
- Artificial intelligence by NACE (isoc_eb_ain2), retail — Eurostat, 2026.