Standard Shopping & Search · Remarketing Deep-Dive
Remarketing Lists for eCommerce (RLSA + Display + Video)
The full remarketing stack for eCommerce Google Ads - audience list structure, RLSA bid modifiers per list, Display + YouTube integration, and the specific audience combinations that outperform Google's automated remarketing suggestions.
Chris Coussons
PPC Strategy Lead
Published
2 August 2026
Read Time
18 min read
"Remarketing is where most eCommerce Google Ads accounts under-invest. The setup effort is real, but the ROAS lift on returning visitors is 3-5× higher than cold traffic."
In the aggressive world of UK eCommerce, capturing a visitor once is a victory, but converting them is the actual battle. Most retailers focus 90% of their energy on "cold acquisition"-the high-CAC, low-intent hunt for new eyeballs. Yet, a baseline audit of 100+ Shopify accounts across the UK reveals a startling truth: the average cold-traffic conversion rate hovers at 1.5%, while the returning visitor conversion rate frequently exceeds 6%.
This article isn't just about setting up a "visitors" list. It is about building a high-fidelity remarketing stack that covers Search, Shopping, Display, and Video. We will cover the 7 essential lists we deploy for every client at our UK PPC agency, the precise bid modifiers that make RLSA work, and the integration of GA4 audiences that many practitioners miss.
Remarketing ROAS Uplift
3-5×
Compared to cold acquisition traffic in standard search campaigns.
Conversion Rate Delta
+400%
Increase in CVR for 'Checkout Abandoners' vs 'All Visitors'.
Optimal Frequency Cap
5/day
To prevent creative fatigue while maintaining mental availability.
1. Why remarketing matters more than most eCommerce accounts realise
The reason remarketing is often treated as an afterthought is the complexity of setup. It requires more than just a tag; it requires a deep understanding of user psychology and the technical plumbing of PPC attribution. When a user searches for "sustainable yoga mats" and clicks your ad, they are in the research phase. They might be comparing prices, reading reviews, or just waiting for payday.
If you don't have a structured remarketing strategy, you are essentially gambling that they will remember your brand and type your URL directly next time. They won't. They will go back to Google, search again, and likely click a competitor's ad. RLSA (Remarketing Lists for Search Ads) ensures that when they search for that same keyword again, your bid is high enough to occupy the top spot, reminding them of their previous intent.
In our work with brands like LADC and AB Ellie, we found that layering granular RLSA modifiers on Standard Shopping campaigns didn't just increase returning revenue-it actually lowered the overall CPA of the account. This happens because the algorithm stops "hunting" for new expensive clicks and focuses on closing the deal with users who already know you.
2. Building the 7 essential audience lists
A generic "All Visitors" list is a blunt instrument. To win at eCommerce remarketing, you need surgical precision. We build these 7 lists in GA4 and sync them to Google Ads for maximum flexibility.
2.1All Visitors (Last 30 Days)
The baseline. Use this as an "Observation" layer on every single campaign. It gives you a benchmark to compare all other audiences against. If this list doesn't have a higher ROAS than your average, your site has a retention problem.
2.2Product Page Viewers (PPV)
Users who hit any URL containing /products/ or /p/. This is the pool for Dynamic Remarketing. They have shown interest in specific items, not just the brand.
2.3Add-to-Cart (ATC) Abandoners
High intent. These users were one click away from starting the checkout. For brands like Biopreventative, this audience often delivers a ROAS in the 8×-12× range. Short duration is key here (14 days max) while the desire for the product is fresh.
2.4Checkout Abandoners
The highest intent pool. They saw the shipping costs and bailed. This is where you might consider a slightly more aggressive offer in your Display creative, or a massive bid uplift in Search to ensure you win the "review search" (e.g., "[Brand] reviews" or "[Brand] discount code").
2.5Past Purchasers (Last 90 Days)
Critical for exclusion. Why pay £2.00 to show a "Shop Now" ad to someone who has already bought twice is the fastest way to lose margin and look unprofessional. Conversely, use this for cross-selling complementary products (e.g., shoe polish to someone who bought boots).
2.6High-Value Purchasers (LTV Segment)
The 20% of customers who generate 80% of your revenue. Build this list using GA4's predictive audiences or simple "Total Revenue > £200" rules. These are your brand advocates. When they search for generic terms, you want to be #1, no matter the cost.
2.7Blog & Editorial Viewers
Often overlooked. These users are researching the problem, not the solution yet. They shouldn't be aggressively RLSA'd, but they are perfect for educational Video or Display ads to build trust.
Recommended List Stack:
All Visitors (30d)
Duration: 30 Days
Product Page Viewers
Duration: 30 Days
Cart Abandoners
Duration: 14 Days
Checkout Abandoners
Duration: 7 Days
Past Purchasers
Duration: 90 Days
3. RLSA bid modifier framework per list
Applying audiences as "Observation" layers is step one. Step two is telling Google how much more you value these users. On manual or ECPC campaigns, bid modifiers are your primary lever. On Smart Bidding (tROAS), they act as a signal to the algorithm.
A common mistake is being too conservative. If your cold traffic CPA is £20 and your returning visitor CPA is £5, you have massive room to bid up. We typically recommend a "stepping" approach:
- Low Intent (All Visitors): +15-25%
- Mid Intent (Prod Viewers): +40-60%
- High Intent (ATC/Checkout): +80-150%
- Loyalty (High LTV): +150-300%
This tells Google: "I don't mind paying more for this click because the probability of conversion is 5× higher." Even on Performance Max, these lists should be added as Audience Signals to help the campaign find its feet faster.
RLSA Bid Calculator
Note: These modifiers apply to Manual CPC or Enhanced CPC campaigns. For Smart Bidding (tROAS), these serve as internal relative importance indicators.
Strategy: At 40% margin and 50% aggression, your primary recovery lever is High-Value Past Purchasers. This audience typically converts at 10-15%, justifying the aggressive bid uplift.
4. Display remarketing setup + creative
Display remarketing falls into two camps: Static and Dynamic.
Dynamic Remarketing
Requires a Merchant Center feed. Google automatically generates ads showing the exact products the user viewed. This is the bread and butter of eCommerce. It solves the "What was I looking at?" problem instantly.
Responsive Display Ads
Use these for brand-level messaging. Focus on your USPs: Free UK Delivery, 5-Star Reviews, or Sustainability credentials. This is about trust, not just the product.
A critical component often missed is Frequency Capping. You want to be present, not annoying. We typically set a cap of 5-10 impressions per user per day. Anything more and you risk "ad blindness" or negative brand sentiment.
Ensure your Shopping Feed has high-quality, lifestyle images for remarketing. White-background images work for Search, but lifestyle images (showing the product in use) often convert 20% better on the Display network.
5. YouTube remarketing setup
Video is the most under-utilised remarketing channel in UK eCommerce. With Video Action Campaigns (VAC), you can target users who have visited your site with skippable in-stream ads that include a product feed.
Why YouTube? Because it captures the user in a high-engagement environment. If they spent 3 minutes on your site looking at a luxury watch, a 15-second video showing that watch on a wrist, explaining the movement, and offering a "First Order" discount is incredibly powerful.
For clients like LADC, we found that YouTube remarketing acted as a "closer" for high-AOV items where the consideration period was 7+ days. It fills the gap between the first visit and the final search.
Cold Visitor
First touchpoint
Interested
Viewed Product
Intent
Added to Cart
Recovery
Abandoned Checkout
Customer
Purchase Success
"The secret to full-funnel remarketing is identifying the exact drop-off point and serving a creative that answers the objection relevant to that stage."
6. Combining lists (union + intersection)
The real magic happens when you start combining audiences using AND/OR logic in Google Ads. Simple lists are fine, but "Custom Combinations" are where the ROI lives.
| Strategy | Logic | Use Case |
|---|---|---|
| The "Abandonment Core" | ATC OR Checkout AND NOT Purchased | Targeting people who started the journey but didn't finish. Zero waste. |
| The "Brand Advocate" | Blog Viewer AND High-Value Purchaser | Targeting loyal customers who are still reading your content. Perfect for new product launches. |
| The "Dormant Customer" | Purchased (180d) AND NOT Purchased (30d) | Win-back campaign for people who haven't bought in a while. |
By using these combinations, you can tailor your bid and creative to the exact relationship the user has with your brand. A "Dormant Customer" might need a £10 voucher, whereas an "Abandonment Core" user might just need a reminder about your 30-day returns policy.
7. GA4 audiences vs Google Ads audiences
A question we get often: "Should I build my lists in Google Ads or GA4?"
The answer is almost always GA4. Why? Because GA4 has access to session-level data and event parameters that the Google Ads tag does not. For example, you can create a list in GA4 for "Users who spent more than 2 minutes on the site but viewed fewer than 2 pages." This indicates a user who is reading but not browsing-a very specific intent signal.
Furthermore, GA4's Predictive Audiences (like "Likely 7-day churners" or "Likely 7-day purchasers") use machine learning to identify users before they even take an action. Importing these into Google Ads allows you to get ahead of the curve.
Be aware that GA4 audiences can take up to 24-48 hours to populate and sync to Google Ads. If you need a list for a flash sale starting in 2 hours, build a URL-based list directly in Google Ads as a temporary measure.
8. Common remarketing mistakes
Avoid these five pitfalls that drain budget and limit the effectiveness of your remarketing stack:
- Neglecting Exclusions: Showing "10% off your first order" to someone who has already bought twice is the fastest way to lose margin and look unprofessional.
- Too Many Lists, Too Little Volume: If a list has fewer than 1,000 active users in the last 30 days, Google Ads often won't serve ads for it on Search. Consolidate smaller lists into broader categories.
- Ignoring Conversion Value Rules: Use Conversion Value Rules to tell Google that a click from a checkout abandoner is worth 3× more than a standard click. This is the modern way to handle RLSA on Smart Bidding.
- Generic Creative: Using the same banner ad for someone who read a blog post and someone who abandoned a £500 cart. Relevance is everything.
- Missing the Attribution Window: For luxury items, people might take 30 days to decide. If your remarketing list only goes back 7 days, you lose them right when they are about to buy. Match your list duration to your average "Days to Conversion" in GA4.