Google Shopping Agency
We fix your product list first: the feed, and the Merchant Center account Google reads it from. Then we run your product ads (Standard Shopping and Performance Max campaigns) on top. We only take Shopify stores spending at least €10K a month on ads.
Written by Christopher Krassnig, Founder & CEO of ZenoX Media. Updated . Every rule here comes from the accounts his team runs.
A Google Shopping management agency runs your product ads on Google for you. It fixes the product feed and Merchant Center first, because that is what Google reads to match a search to a product. Then it builds the product ad campaigns (Standard Shopping and Performance Max), sets bids from your real margins, and cuts wasted searches every week.
ZenoX Media is a Google Shopping management agency for Shopify stores, founded by Christopher Krassnig. We run Google Ads for 300+ stores today. That makes us one of the largest Google Ads agencies for ecom and dropshipping. The fee is 10% of your first €10,000 of monthly spend, stepping down to 6% above €150,000.
Still comparing agencies? See 8 Google Shopping agencies compared, us included
What's included
We build the product feed to Google's product data rules and Shopping ads policies, so approvals hold. We keep it clean as your catalog changes. Titles first: say what the product is, then what a buyer checks, using only facts from the product page. A made-up example: 'Cool Vintage Dad Hat' becomes 'Vintage Dad Hat, Black Cotton' when the page says black cotton.
We work down Merchant Center's own issue list. A disapproved product cannot show at all, so those go first. A warning, like a title Google cuts short, only limits how a product shows, so it comes next. We check product IDs, shipping, prices that do not match the site, category, and color and size. Then we fix the cause in the feed or on the site, so the error does not come back on the next sync.
Google wants each product's barcode number (GTIN) or the maker's part number (MPN). We get the real numbers from you, your supplier or the maker. Google allows 'no ID' only for products that truly have none, like custom or vintage items. We never use it to skip a number we could not find.
Margin is what you keep from a sale after the product cost. We tag products by margin and sales, then split them across Performance Max (PMax) and Standard Shopping. A 60% margin product and a 12% margin product stop sharing one target.
Return on ad spend (ROAS) is revenue divided by ad spend. Each margin group gets its own ROAS goal, set from its real margin and changed in small steps. We watch how many products still get clicks, not only the ROAS line.
Every week we read the real searches that showed your ads (the search terms report). Junk searches get blocked with negative keywords. Brand searches get split out so they stop flattering the numbers. Searches that sell get their own bid.
We set merchant promotions and sale prices in the feed, then check them on the live listing. Your discount shows in the Shopping ad, not only on your own site.
We check Google Ads sales against your Shopify orders before we trust a bid. When Google misses sales, its bidding learns from only part of the story. We show you the gap and fix it with you. One fix is tracking that runs on a server, not in the browser (server-side tracking).
One feed per country, each with its own language, currency, shipping and tax settings. All of them run off one catalog. Titles get rewritten in each market's own language.
A short written update in your Slack channel every week, and a deeper review every month.
A tiered fee on your monthly Google Ads spend. Each rate only hits the spend inside its own bracket, so your average rate falls as you grow. You pay Google directly. We never mark up your ad budget.
Monthly spend
First €10,000
10%
Monthly spend
€10,000 - €30,000
9%
Monthly spend
€30,000 - €80,000
8%
Monthly spend
€80,000 - €150,000
7%
Monthly spend
Above €150,000
6%
No setup fee. No lock-in, month to month. Our team's feed work, Merchant Center fixes and ad creative are in the fee. Minimum ad spend: €10K a month.
| Monthly Google Ads spend | Our fee | Average rate |
|---|---|---|
| €10,000 | €1,000 | 10.0% |
| €30,000 | €2,800 | 9.3% |
| €80,000 | €6,800 | 8.5% |
| €150,000 | €11,700 | 7.8% |
One fee per client on total spend, not per store.
Check every quote for setup fees and lock-ins. Full pricing page
The first 30 days
Day 1
You add us to Google Ads, Merchant Center and Shopify. We open a Slack channel with you. You talk to the people doing the work.
Days 1-3
Errors and disapprovals first, then tracking, then which products ate the budget. We check Google Ads numbers against Shopify.
Week 1
We fix the Merchant Center errors that are in our hands, worst first. Title rewrites start with products that spend a lot but sell too little. Titles that already sell stay, unless the searches that buy use other words. Campaigns get rebuilt: feed-only PMax first (a PMax campaign built only from your product feed), then Standard Shopping where it earns its place.
Weeks 2-4
Weekly search term reads. Junk searches get blocked. Products get margin and sales labels so each group gets its own target. Title rewrites keep going, batch by batch.
Day 30
What moved, what we cut, how far the feed work got, and the plan for next month. How long the full catalog takes depends on its size and how messy it is.
Case studies
Feed and Merchant Center work drove the growth on these three stores. The numbers come from each store's own Google Ads account. Nobody outside ZenoX checked them.
Growth costs money. The travel store went from €20K to €60K in monthly revenue. Its monthly spend went from €7K to €22K, and ROAS slipped from 2.9x to 2.7x.
The old agency had given up on the feed. We fixed it, added product labels and moved sales tracking to the server before the budget went up.
| Start | After 5 months | |
|---|---|---|
| Monthly revenue | €20.0K | €60.0K |
| Monthly ad spend | €7.0K | €22.0K |
| ROAS | 2.9x | 2.7x |
Read the full story
4 in 10 products were disapproved in Merchant Center. They were cleared in the first week. Then PMax scaled on a clean feed.
| Start | After 6 months | |
|---|---|---|
| Monthly revenue | €12.0K | €88.0K |
| Monthly ad spend | €4.0K | €22.0K |
| ROAS | 3.0x | 4.0x |
Read the full story
Titles read like stock codes. We rewrote the top 80 from the account's own search terms and split products by labels. No bid changed.
| Start | After 3 months | |
|---|---|---|
| Monthly revenue | €216.0K | €348.0K |
| Monthly ad spend | €120.0K | €120.0K |
| ROAS | 1.8x | 2.9x |
| Cost per sale | €78 | €48 |
Read the full story
Reviews
Word for word, from named reviewers. Read every review on Trustpilot.
Whoever wants to start/scale their business on Google Shopping, this is your guy.
I expected good but they did record days, switched to a non google css and optimized the entire feed before the week was over. The support is nonstop.
I literally don't have to think about or manage Google at all! They take care of absolutely everything, and their fee is very fair.
Press placements
Fortune and Markets Insider ran press releases from ZenoX. USA Today ran contributor content.
Send us your store on WhatsApp. Share your screen or give us read access, and we show you what we would fix first.
Why ZenoX for Google Shopping
We read 95,149 fashion product titles across 115 Google Ads accounts. The top 10% by revenue average 50.6 characters. Products that sold nothing average 56.3. Shorter titles go with more sales. That is a link, not proof. Google also asks you to put the variant in the title, like color or size, when it tells two products apart. So we keep what a buyer needs and cut the filler. Our Product Feed Quality Index checked 12,375 products across 251 Merchant Center accounts.
For campaigns, we start most new accounts on feed-only Performance Max (PMax). That is a PMax campaign built from your product feed, with no text, images or video uploaded. Chris says it in his PMax setup video: we use that build in 99% of accounts at the start. Then Standard Shopping picks up the products PMax spends too little on.
Sources: our title study, Google's title rules, and our Product Feed Quality Index. Product IDs follow Google's rule for products with no ID.
From the @ecomchrisx YouTube channel
Chris shows the order we use on client feeds, step by step. 32 minutes.
Campaign types
Both can show your products as Shopping ads. Google's own summary is on its Performance Max help page.
When Standard Shopping and PMax can both show the same product, Google gives each ad an auction score (Ad Rank) and serves the higher one. PMax does not win by default, so the two can run side by side. Sources: how PMax meets other campaigns and text customization in PMax, both Google help pages.
The build we start most new accounts on. Tracking first, then Merchant Center linked. Bidding goes for sales value with no ROAS target. No text, images or video get uploaded. Google still picks where each ad shows.
See every step of the setup01 · Bid targets
With a target ROAS, you give Google a return goal and it bids to hit that goal on average. That is how Google's target ROAS help page puts it. An average can hide products that get almost no bids.
Set the target too high and the bidder plays it safe. It spends on the few products it knows sell and bids little on the rest. ROAS looks great. Revenue stops growing. The many products that each sell a little (the long tail) go quiet.
So each margin group gets its own target. The first step is the break-even point on ad cost. Gross margin here means price minus product cost, as a share of the price. Break-even ROAS is 1 divided by that margin. Two examples, counting only product cost: a 60% margin product breaks even around 1.7. A 12% margin product needs about 8.3.
That number only pays for the ads. Real profit also has to cover our fee, shipping, returns, apps and staff, if your margin does not already include them. So the target that makes you money sits above break-even. One shared target for both products fails one of them. Either the 12% product loses money, or the 60% product gets bid too low.
Then we move slowly. We change targets in small steps and give each step time to show. That is our own habit, not a Google rule. A big jump makes it hard to tell what caused the next week's numbers. Between changes we count how many different products still get clicks. When that count drops, we check the target first, then stock, prices and disapprovals.
02 · Blocked searches
Shopping campaigns have no keywords. You cannot tell Google which searches to enter. You can only tell it which ones to stay out of. A negative keyword does that. So negatives are your main control.
The input is Google's list of the real searches that showed your ads, the search terms report. We read it every week on every account. Junk goes negative: how-to searches, repair searches, competitor part numbers. Brand searches get split out, so they stop making other campaigns look better than they are. Searches that sell get their own campaign and their own bid.
On Standard Shopping you do that with negatives plus campaign priority. Priority works backwards from what most people guess. Google checks the High priority campaign first, whatever the bids are. So High priority becomes the cheap catch-all. You add your best searches to it as negatives. They fall through to a Low priority campaign with your real bid. The full build is in our post on the three-campaign priority structure.
03 · The weekly report
A written update in your shared Slack channel, every week. Short, in plain words. No slide deck.
The numbers come from Shopify first and Google Ads second. Google Ads reports what it thinks it drove. Shopify shows the orders that got paid. When the two disagree, the update says so.
Once a month we go deeper: which products sold more or less, what the feed work changed, and the plan for next month.
Client updates are private. Yours carries your store's real numbers.
Before you sign anywhere
A good answer sounds the same from any agency. If one dodges a question, that is your answer.
We sell this service, so weigh our view.
By its own site: the largest independent full-funnel marketing agency (ads for every step, from first look to sale), with 1,000+ employee owners and $4B in digital media under management. It covers Amazon, TV, social and search.
Pick them over us: You are a big brand that wants TV, Amazon and Google from one partner.
Check: We found no public price on its site.
Source: Tinuiti's own site, readBy its own page, it has worked in ecommerce, paid ads, SEO and web work since 2004. That page covers the product feed and Merchant Center setup. It also sells SEO (work to rank in Google's unpaid results).
Pick them over us: You want Shopping and SEO from one agency, or your store runs on another platform.
Check: No price on the page. Its FAQ says: "Management fees depend on your ad spend, how complex the account is, and which channels we manage. We quote after reviewing your account."
Source: OuterBox's own site, readA London agency with a New York office. Its Google Shopping page names Performance Max, feed work in Google Merchant Center with feed tool partners, reporting and ad creative. It lists Google Premier Partner status.
Pick them over us: You are a big UK retail brand and want a London team. Its page names clients like Toolstation and Peacocks.
Check: We found no public price on the page.
Source: Found's own site, readSells a service it calls GMC Unban, for Merchant Center suspensions. Says it has scaled 150+ brands, with no long-term contracts.
Pick them over us: Your Merchant Center is suspended right now and the rescue is the whole job.
Check: We found no public price on its homepage.
Source: More Than Scaling's own site, readWant the longer list? Eight Google Shopping agencies compared, us included.
Bad fit
A bad fit costs both of us. If one of these is you, we will tell you on the first chat.
We only take Shopify stores. On another platform, pick an agency that works with yours.
That is our hard minimum. Learn it yourself in the Google Ads eCom Lab first. Come back when you scale.
Nobody can promise one, and we will not. We promise the work: the feed, the account and a weekly update.
If you will not show a real business name, real shipping times or a real return policy, Merchant Center will suspend you. We fix those pages with you. We will not fake them.
If you want your hands on every bid and title, a consultant or our community fits better than an agency.
The Google Ads eCom Lab on Skool teaches the same Shopping playbook. Standard is $9 a month.
Join on Skool for $9 a MonthGoogle Shopping FAQ
Send us your store URL on WhatsApp. We start with your live store and product pages. To read your Merchant Center errors, we need read access or a shared screen.
No form, no calendar. It is a WhatsApp chat with the team.
Not ready to hire an agency yet? Join the Google Ads community
From the playbook
Free guides from our team. The same playbook we run on client accounts.
Google Shopping Ads: What They Are, How They Work and What They Cost
Google Shopping ads are product listings Google builds from your feed. How the auction works, what a click costs, setup steps, and Shopping vs PMax.
How to Set up Google Merchant Center: 2026 Step-by-Step Guide
How to Set up Google Shopping Ads in 2026: A Beginner's Guide
A step-by-step guide to launching your first Google Shopping campaign in 2026. From linking Merchant Center to choosing Performance Max vs Standard Shopping.
Google Shopping Setup Guide 2026: From Merchant Center to First Sale
A step-by-step Google Shopping setup guide for 2026. Merchant Center, feed, Google Ads linking, first campaign, and a realistic day 0 to 14 timeline.
How to Run Google Shopping with a Small Catalog
Running Google Shopping with under 50 products? Here is the campaign structure, the budget maths, and the feed work a small catalog needs.
Google Shopping Feed Optimization: The Complete Guide for 2026
Short answers
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