How to Choose a Shopify PPC Agency

Choosing a Shopify PPC agency isn’t simply about finding somebody who knows how to use Google Ads.

For an ecommerce business, paid media is connected to much more than the advertising account.

Your Shopify product data can influence which products appear in Shopping ads. Your tracking setup determines what the advertising platform thinks is working. Your margins affect how much you can afford to pay for a sale. And the experience customers have after clicking an ad can be just as important as the campaign that brought them there.

That means a good Shopify PPC agency needs to understand the relationship between paid media and your ecommerce store.

It should be asking about products, feeds, tracking, margins, customers and conversion — not just keywords, campaigns and budgets.

So, what should you look for when comparing agencies?

What Does a Shopify PPC Agency Do?

A Shopify PPC agency manages paid advertising for ecommerce businesses using Shopify, combining campaign management with an understanding of product feeds, ecommerce tracking and store performance.

Depending on your requirements, this might include:

• Google Ads
• Google Shopping
• Performance Max
• Microsoft Advertising
• Paid social
• Product feed optimisation
• Google Merchant Center management
• Conversion tracking
• Campaign strategy
• Budget management
• Creative testing
• Reporting
• Landing page analysis

The important distinction is the ecommerce context.

Generating a lead and generating an online transaction are different challenges.

A Shopify PPC agency needs to understand not only how to generate traffic, but which products should be advertised, how product data affects campaigns and whether the resulting sales make commercial sense.

Start With Your Commercial Objectives

Before discussing campaign structure, a good agency should want to understand what you’re trying to achieve.

“We want more sales” isn’t quite enough.

Would you like to:

• Acquire more new customers?
• Grow a particular product category?
• Increase profitable revenue?
• Expand into another market?
• Launch a new range?
• Increase sales during a seasonal period?
• Improve efficiency from your existing budget?

Different objectives require different approaches.

An agency also needs to understand the economics behind those goals.

Two Shopify stores might each generate £100,000 per month, but if one operates at substantially higher margins, the amount each can afford to spend acquiring a customer could be very different.

Your PPC strategy needs to reflect the economics of your store.

Look for Shopify and Ecommerce Experience

An agency doesn’t need to work exclusively with Shopify to be good at Shopify PPC.

But it should understand ecommerce.

Ask about the types of stores it has worked with and, more importantly, the challenges it has solved.

A business selling 20 high-value products has very different requirements from a retailer managing a catalogue of 50,000 SKUs.

Relevant experience might include:

• Large product catalogues
• Frequent stock changes
• Seasonal demand
• Multiple markets
• High-value purchases
• Repeat-purchase products
• Complex product variants
• Promotional calendars

The agency should be able to explain how those differences affect its paid media strategy.

Product Feeds Should Be Part of the Conversation

If Google Shopping forms part of your PPC strategy, your product feed is fundamental.

Shopify contains much of the information that advertising platforms need to understand your products, including details such as:

• Product titles
• Descriptions
• Prices
• Availability
• Images
• Variants
• Brands
• Product identifiers

That information can then be supplied to Google Merchant Center and used in Shopping-based campaigns.

A Shopify PPC agency shouldn’t treat this feed as a one-off technical setup task.

It should understand how product data affects advertising performance.

Ask How They Approach Feed Optimisation

Imagine you’re selling a pair of boots internally called: The Bradford

That might be a perfectly good product name, but on its own, it tells a search engine very little about the product. A more descriptive feed title might provide context around the brand, gender, material, colour and product type.

The precise approach depends on the catalogue. Good feed optimisation isn’t about stuffing every possible keyword into product titles. It’s about providing accurate, useful information that helps advertising platforms and potential customers understand what you’re selling.

Ask whether the agency reviews:

• Product titles
• Descriptions
• Product types
• Google product categories
• Images
• Identifiers
• Availability
• Pricing
• Custom labels

If product feeds barely feature in the conversation, that’s worth questioning.

Ask How They Use Custom Labels

Custom labels allow advertisers to organise products using information that’s commercially useful to the business.

You could group products according to:

• Margin
• Bestseller status
• Season
• Price band
• Stock level
• Sale status
• Product priority

That can create much more useful campaign segmentation.

For example, imagine you sell two products generating similar revenue.

One has a healthy margin and plenty of stock.

The other has a thin margin and only a handful of units remaining.

Treating them identically simply because they’re in the same Shopify collection might not make commercial sense.

A strong agency should think beyond the category structure customers see on your website.

Merchant Center Expertise Matters

For Google Shopping activity, Google Merchant Center sits between your product data and advertising.

Problems here can affect whether products are eligible to appear.

Your agency should be comfortable investigating areas such as:

• Disapproved products
• Price mismatches
• Availability mismatches
• Missing identifiers
• Feed errors
• Shipping information
• Policy issues

Ask who monitors Merchant Center and how problems are identified.

You don’t want to discover that a significant proportion of your catalogue stopped advertising several weeks ago because nobody was paying attention to feed diagnostics.

Tracking Needs to Be Reliable

PPC platforms optimise towards the conversion information they’re given.

If that information is inaccurate, campaign optimisation can head in the wrong direction.

Your agency should therefore take conversion tracking seriously.

For a Shopify store, the most important conversion is usually the completed purchase.

But recording “a purchase happened” isn’t enough.

You also need confidence in information such as:

• Transaction value
• Currency
• Transaction ID

Depending on your wider strategy, you may also track actions including add to basket and begin checkout.

The agency should be able to explain which actions it treats as primary advertising goals and why.

Don’t Assume Shopify Tracking Is Automatically Correct

Shopify can make parts of ecommerce tracking more straightforward, but that doesn’t mean every implementation is automatically reliable.

Tracking setups can change over time.

Apps can introduce additional scripts.

Consent requirements can affect data collection.

Multiple tracking implementations can accidentally create duplication.

A good Shopify PPC agency should validate the data rather than assuming it works because conversions appear in Google Ads.

Ask how it checks advertising data against other sources such as Shopify and your analytics platform.

The numbers may not match perfectly because different platforms can attribute sales differently.

But large unexplained discrepancies need investigating.

Ask About Consent and Measurement

Privacy and consent requirements have changed how digital advertising data is collected.

Your agency should understand the implications of your consent setup and how it interacts with advertising and analytics platforms.

This doesn’t mean your PPC agency should necessarily provide legal advice.

It does mean it should understand the technical measurement environment it’s operating within and work appropriately with your developers or consent-management specialists.

Be cautious of anybody promising to recover every piece of lost tracking data.

Measurement is rarely perfect.

Good specialists are comfortable acknowledging that.

Find Out How They Structure Campaigns

There’s no single perfect Google Ads structure for every Shopify store.

A good agency should be able to explain why it has chosen a particular approach.

Segmentation might reflect:

• Product category
• Margin
• Bestseller status
• Brand
• Price
• Seasonality
• Market
• Customer type

The key is having a reason for the structure.

More campaigns don’t automatically mean more control.

Excessive segmentation can spread data too thinly, particularly for smaller advertisers.

At the other extreme, putting the entire catalogue into one campaign can make it harder to control genuinely different commercial priorities.

The agency should find an appropriate balance.

Ask How They Approach Performance Max

Performance Max has become an important part of Google Ads for many ecommerce businesses.

It uses automation across Google’s advertising inventory and can incorporate products from Merchant Center.

That automation can be useful.

But “Google handles it” isn’t a PPC strategy.

The agency still needs to think about:

• Which products are included
• Product data quality
• Campaign segmentation
• Conversion goals
• Creative assets
• Budgets
• Bidding
• Customer acquisition
• Reporting

Automation changes the work an agency does.

It doesn’t eliminate the need for expertise.

In some ways, it makes the quality of the inputs even more important.

Ask How They Decide What Not to Advertise

This is an underrated question.

Not every product in your Shopify catalogue necessarily deserves paid advertising.

Some products may:

• Have very low margins
• Be regularly out of stock
• Convert poorly
• Generate high return rates
• Have weak product pages
• Be commercially unimportant

Yet it’s easy to connect a catalogue to an advertising platform and allow everything to run.

A thoughtful agency should be willing to exclude products when the evidence supports it.

More products advertised doesn’t necessarily mean more profitable growth.

Look Beyond ROAS

Return on ad spend is one of the most common ecommerce PPC metrics.

If you spend £1,000 and generate £5,000 in attributed revenue, that’s a 500% ROAS.

Useful?

Absolutely.

The complete commercial picture?

No.

ROAS doesn’t inherently tell you about:

• Product margin
• Cost of goods
• Shipping
• Returns
• Discounts
• Customer lifetime value
• New vs existing customers

Imagine one campaign generates a 600% ROAS selling low-margin products while another generates 450% from a high-margin range.

The campaign with the lower ROAS might actually create more profit.

Your Shopify PPC agency should understand that distinction.

Ask How They Measure New Customer Acquisition

Existing customers can make PPC results look extremely efficient.

Someone who has bought from you repeatedly might search your brand name, click an advert and purchase again.

Google Ads may attribute that revenue to PPC.

But did the advert create the demand?

That’s less certain.

If customer acquisition is a priority, ask how the agency distinguishes between new and returning customers where the available data allows it.

Useful measures could include:

• New customer acquisition cost
• New customer revenue
• Percentage of new customers
• Repeat purchase behaviour
• Customer lifetime value

The right measures depend on your business model.

A store selling mattresses will have very different repeat-purchase behaviour from one selling coffee.

Ask How They Treat Brand Campaigns

Branded searches often produce excellent-looking PPC metrics.

That’s not surprising.

People searching directly for your company already know you exist.

Brand campaigns can still be valuable. They may help protect visibility, communicate offers or respond to competitors advertising against your name.

But brand and non-brand performance should be understood separately.

Otherwise, highly efficient branded traffic can disguise weaker customer acquisition elsewhere in the account.

A good agency should be able to explain how much performance comes from people already searching for you and how much comes from creating or capturing broader demand.

Your Shopify Store Is Part of PPC Performance

Sometimes the campaign isn’t the problem.

If people click relevant adverts but don’t buy, look at what happens after they arrive.

Potential problems might include:

• Slow pages
• Weak product imagery
• Unclear descriptions
• Poor mobile UX
• Confusing variants
• Unexpected delivery costs
• Weak trust signals
• Complicated navigation
• Uncompetitive pricing

A strong Shopify PPC agency should be willing to identify those issues.

It may not be responsible for redesigning your store, but it should understand that paid media performance doesn’t stop at the click.

This is where an agency with wider Shopify, UX and development expertise can be particularly useful.

Reporting Should Lead to Decisions

A monthly PPC report shouldn’t simply be a collection of charts exported from Google Ads.

You need to know:

What happened?

Why do we think it happened?

What are we doing about it?

Reporting might cover:

• Spend
• Revenue
• ROAS
• Conversion rate
• Cost per order
• New customer acquisition
• Product performance
• Category performance
• Feed health
• Budget utilisation

But the exact metrics should reflect your objectives.

A business prioritising aggressive customer acquisition should receive a different conversation from one focused on short-term profitability.

Ask What the Agency Actually Does Each Month

Automated bidding has changed paid media management.

Agencies no longer need to make every individual bid adjustment manually.

That’s a good thing.

But it also means you should understand where their time and expertise go.

Useful ongoing work could include:

• Product feed optimisation
• Search-query analysis
• Budget allocation
• Product segmentation
• Creative testing
• Tracking checks
• Merchant Center monitoring
• Performance analysis
• Landing page recommendations
• Commercial reviews
• Testing new opportunities

Be wary of agencies that equate activity with value.

Changing settings every week doesn’t necessarily improve performance.

Sometimes good management means gathering enough evidence before intervening.

Communication Matters

PPC changes quickly.

Performance fluctuates.

Products go out of stock.

Promotions begin.

Budgets need adjusting.

Your relationship with the agency needs to support that reality.

Before appointing one, understand:

• Who manages your account
• How often you’ll speak
• How performance is reported
• How urgent issues are handled
• How promotional plans are communicated
• How the agency works with your internal ecommerce team

Your paid media agency shouldn’t find out about Black Friday promotions from your website after they’ve launched.

Likewise, your ecommerce team should understand major changes being made to advertising strategy.

Be Careful With Guarantees

Paid media can be forecast.

It can’t be guaranteed.

An agency doesn’t control:

• Customer demand
• Competitor activity
• Google
• Your prices
• Your stock
• Your website
• Your product
• The economy

Historical performance can provide evidence.

Testing can reduce uncertainty.

Experienced specialists can make informed forecasts.

But nobody can credibly guarantee that your Shopify store will achieve a particular ROAS indefinitely.

Look for confidence grounded in evidence rather than certainty unsupported by it.

Signs of a Good Shopify PPC Agency

A strong potential partner should be interested in much more than your advertising budget.

They should ask about:

• Your products
• Your margins
• Your customers
• Your bestsellers
• Your stock
• Your promotions
• Your tracking
• Your Shopify setup
• Your growth objectives

They should be comfortable discussing what they don’t know yet.

And they should be able to explain complex advertising decisions in understandable language.

You shouldn’t need to become a PPC specialist to understand why your agency is spending your money in a particular way.

Choose an Agency That Understands the Store Behind the Ads

At ZEAL, we combine paid media expertise with Shopify, ecommerce, UX, development and SEO knowledge. That allows us to look beyond the advertising interface and understand how the store itself affects paid performance.

If you’re looking for a Shopify PPC agency that can connect campaigns with the wider ecommerce picture, get in touch with ZEAL.