How to Choose a Google Shopping Agency

Choose a Google Shopping agency by checking that it works on your product feed as well as your campaigns, explains how it will handle Performance Max, reports profit by product, and lets you own the Merchant Center and Ads accounts. Be wary of agencies that only change bids and never touch the feed.

Agency websites tend to say the same things, so the pitch tells you little. What separates them is the work they do in the weeks after you sign. If you are working out how to choose a Google Shopping agency, the sections below give you the questions that expose that work before you commit.

What does a Google Shopping agency do?

A Google Shopping agency manages everything that decides whether your products show, what they cost per click and whether those clicks turn into profitable orders. That covers the product feed, Merchant Center, the campaigns, conversion tracking and reporting.

The mix matters because of how the format works. Shopping ads use your Merchant Center product data, not keywords, to decide where your products appear (as of October 2026). So a large share of the results comes from work done outside the campaign screen.

That is the scope we work to in our own Shopping Ads service, and it is a fair yardstick for any agency you talk to.

Why does the feed matter as much as the campaigns?

The feed matters because it decides which searches your products can show for in the first place. Bids and budgets only control how hard you compete once Google has matched a product to a search.

A thin title or a missing attribute means a product is matched to vague searches, or to none. No bid change fixes that. Here is what feed work looks like for different stores:

• Apparel store. Each size and color is its own item. The agency should make sure color, size, gender and age group are filled in, and that titles lead with what shoppers type, such as the product type and material.
• Auto or appliance parts. Shoppers search part numbers and model names. Titles need the part number and what it fits, and product identifiers need to be correct.
• Furniture and home goods. Dimensions, material and style belong in the title and attributes, and shipping settings need to reflect oversized items honestly.
• Supplements and beauty. Product wording has to stay inside Google’s policies, because a claim that reads as a health promise can get a product disapproved.
• Large catalogs. Custom labels for margin, price band or best sellers let the agency give budget to products that earn it.

If an agency cannot describe what it would change in your feed after looking at a sample of your products, treat that as an answer. Our guide on how to optimize your Google Shopping product feed shows what good looks like.

What questions should you ask?

Ask questions that make the agency describe its actual work on your account: the feed, Performance Max, reporting, ownership and who does the job. Specific answers are a good sign; general ones are not.

The Performance Max question deserves a follow-up. As of October 2026, Google Ads provides a search terms report for Performance Max that can be split by ad format, a channel performance report that shows where ads served, and brand exclusions that cover Search, Shopping and YouTube search inventory. Ask the agency which of these it reviews and how often. For background, see Performance Max spending on brand searches and whether Performance Max is worth it for ecommerce.

What are the red flags?

The main red flags are promises about results, vague answers about the feed, reporting you cannot check, and any setup where the agency controls accounts you should own.

• Guaranteed results. Nobody controls the auction, your competitors or your margins. Google’s own policy for third parties bars false, misleading or unrealistic claims about expected results (as of October 2026).
• Bids only, feed never. If monthly updates talk about budgets and targets and never about product data, half the job is missing.
• Fees you cannot separate from ad spend. Google expects partners to be honest and transparent about costs, and says you have the right to know at least the clicks, impressions and total cost of your ads (as of October 2026). You should see what went to Google and what went to the agency.
• Your campaigns in a shared or agency-owned account. Google requires partners to use a separate account for each advertiser (as of October 2026). If you cannot log in and see your own account, walk away.
• One blended ROAS. A single account-wide number can hide brand searches doing the heavy lifting and products that lose money.
• Long lock-in before any work is shown. A long minimum term protects the agency. A short one makes it earn the next month.
• No questions about your margins. An agency that never asks what you keep on each product cannot know which sales are worth buying.
• Nothing in writing. Google advises advertisers to get an official copy of the agreement in writing. Scope, fee, term and exit terms should all be in it.

Who should own Merchant Center and the Ads account?

You should. The accounts hold your product data, your conversion history and your billing, and all of it should stay with your business if the agency relationship ends.

In Merchant Center, people are added under Access and services, and only admins can add or remove others (as of October 2026). Standard access cannot link a Google Ads account or work with reports, so an agency may reasonably ask for admin access. That is fine as long as you keep an admin role yourself.

Before you sign, confirm these:

☐ You can log in to Merchant Center and Google Ads with your own email.

☐ You hold admin access on both, and it does not depend on the agency.

☐ Ad spend is billed to your card or account, separate from the agency fee.

☐ Feed rules, supplemental feeds and custom labels are documented and stay with you.

☐ The agreement states that access is removed, and nothing deleted, when you leave.

What should the first 90 days look like?

The first 90 days should move from fixing foundations, to restructuring campaigns, to making decisions product by product. Results vary by store, so judge the agency on whether this work happens and whether you can see it.

Two points on timing. Google says a new Shopping campaign may need up to two weeks to learn, and performance can move around in that time (as of October 2026), so a rebuild in month two will not show its settled results straight away. And an agency that restructures everything in week one, before checking tracking, is working from numbers it has not verified.

At JuvioX we work on a flat monthly management fee, month to month with no lock-in, and your accounts stay yours. If you want a second opinion on your current setup or an agency proposal, start with a free audit of your feed, campaigns and tracking. More detail is on our Shopping Ads service page.