🎯 Overview
Improving Return on Ad Spend isn’t only about reducing acquisition costs—it’s also about generating more revenue from the customers your advertising already brings to your store. Rebuy’s Checkout + Post-Purchase tools help you make the most of that paid traffic by improving the checkout experience, generating incremental revenue after a customer converts, and continuously testing offers to find the experiences that produce the strongest results.
Post-purchase is particularly valuable for ROAS because the customer has already completed their initial purchase before seeing the offer. Rebuy positions post-purchase as an opportunity to generate additional revenue without adding friction to the original conversion.
By implementing the strategies below, you can increase the revenue generated from acquired customers and make your paid media economics work harder.
🛍️ 1. Generate More Revenue From Paid Customers With Post-Purchase Upsells + Downsells
Once you've paid to acquire a customer and they've completed checkout, use Rebuy Post-Purchase to create another relevant purchase opportunity. Rebuy allows merchants to create post-purchase flows containing upsells, downsells, or combinations of both.
Post-Purchase Upsells: Recommend a complementary product immediately after the original purchase.
Add a Downsell: If the customer declines your first offer, present another relevant product or offer at a different price point.
Build Multi-Step Flows: Create sequences that determine what customers see depending on whether they accept or decline an offer.
Prioritize Complementary Products: Start with accessories, replenishable items, frequently purchased companions, or other products that naturally complement the original order.
Pro Tip: Think about post-purchase revenue in the context of customer acquisition economics. If two offers convert differently, the best offer for ROAS is the one that generates the strongest incremental revenue—not necessarily the one with the highest acceptance rate.
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📊 2. A/B Test Post-Purchase Offers to Maximize Incremental Revenue
Instead of guessing which post-purchase experience will produce the strongest return, use Rebuy’s A/B Testing functionality to systematically compare offers. Rebuy specifically describes Post-Purchase A/B Testing as a way to identify combinations of offers that produce the strongest ROI.
Test the Product: Compare different input products to determine which generates the most incremental revenue.
Test the Discount: Experiment with discount levels to understand whether a higher conversion rate offsets the additional promotional cost.
Test the Language: Try different headlines, benefits, calls to action, and offer positioning.
Test Upsell + Downsell Combinations: Compare different sequences to identify the flow that generates the most revenue per customer.
Analyze the Entire Flow: Evaluate the cumulative performance of your upsell and downsell sequence rather than looking at one individual offer in isolation.
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Pro Tip: Optimize toward revenue, not just clicks or offer conversion. A more expensive product with a lower acceptance rate may still produce more incremental revenue than a low-cost offer that converts more frequently.
🛒 3. Optimize Checkout to Convert More of the Traffic You Paid For
Getting customers from an ad to your store is only part of the equation. For Shopify Plus merchants, Rebuy Checkout Extensions give you additional ways to optimize the final purchase experience with personalized product recommendations and branded content directly within checkout.
Add Relevant Checkout Recommendations: Surface products related to what the shopper is already buying without requiring them to leave checkout.
Use Content Blocks to Reinforce Confidence: Add branded content such as reviews, trust badges, testimonials, or promotional imagery directly to the checkout experience.
Test Checkout Experiences: Rebuy supports A/B testing of Checkout Extension offers so Shopify Plus merchants can compare different recommendations and experiences.
Pro Tip: For ROAS, conversion improvements can be particularly valuable because you're converting a greater percentage of traffic you've already paid to acquire. Keep checkout recommendations highly relevant and use trust-building content to support—not distract from—the customer’s decision to complete their purchase.
⚠️ Important: URL Rules Are Not Supported in Checkout or Post-Purchase
Unlike on-site Merchandising Widgets, do not build your Checkout or Post-Purchase strategy around URL-based rules. Rebuy’s current documentation lists URL Parameters as unsupported for Checkout Extensions and URL-Based Rules as unsupported for Post-Purchase Data Sources.
If you want to create campaign-specific experiences based on paid traffic source, use URL/UTM targeting earlier in the customer journey through Cart + Merchandising, then use supported checkout and post-purchase targeting logic once the customer reaches those surfaces.
📈 Additional ROAS Strategies & Use Cases
Build Trust With Social Proof + Trust Badges in Checkout
Paid traffic may include customers who are less familiar with your brand than repeat or organic shoppers. Use Checkout Content Blocks to reinforce confidence at the point when shoppers are deciding whether to complete their purchase.
Rebuy Content Blocks support branded elements including customer reviews, trust badges, influencer testimonials, and promotional imagery.
Key Actions:
Highlight Social Proof: Surface reviews, ratings, testimonials, or other credible customer proof.
Add Trust-Building Messaging: Reinforce relevant guarantees, product quality, shipping benefits, or other real advantages your store provides.
Keep the Content Concise: Use checkout content to answer hesitation rather than introducing unnecessary distractions.
Test Different Messages: Compare different trust signals to determine which experience performs best.
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Use Rebuy Monetize to Generate Incremental Revenue After Conversion
Rebuy Monetize is the current Rebuy product for serving personalized third-party offers on supported post-purchase surfaces such as the Thank You Page and Order Status Page. It provides an additional way to monetize customers after their original purchase is complete.
For ROAS-focused merchants, that incremental revenue can help increase the total value generated from customers acquired through paid channels.
Key Actions:
Install Monetize on the Thank You Page: Capture the customer’s attention immediately following their purchase.
Add Monetize to the Order Status Page: Create another opportunity for engagement when customers return to review their order.
Use Both Supported Surfaces: Rebuy currently recommends installing Monetize on both the Thank You Page and Order Status Page for maximum visibility and engagement.
Monitor Incremental Revenue: Evaluate the additional revenue generated alongside your broader paid acquisition performance.
A/B Test Monetize: Rebuy supports A/B testing Monetize offers on the Thank You Page and Order Status Page.
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Use Post-Purchase as a Low-Friction Revenue Opportunity
Adding more decisions before checkout can sometimes create additional friction. Post-purchase gives you another place to test revenue-generating offers because the initial transaction has already taken place. Rebuy’s Post-Purchase Best Practices specifically positions this as an opportunity to boost order value without impacting the conversion rate of the initial purchase.
Key Actions:
Keep Pre-Purchase Checkout Focused: Avoid overwhelming customers with too many competing offers.
Move Secondary Offers Post-Purchase: Test products that don't need to appear before the customer completes their original order.
Compare Incremental Revenue: Analyze whether an offer performs better before or after checkout.
Continue Testing: Rotate products, discounts, messaging, and upsell/downsell sequences to find your strongest combination.
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🔗 Explore More Rebuy Features
To further improve Return on Ad Spend, consider expanding your strategy beyond Checkout + Post-Purchase:
Flows + A/B Testing: Build and test broader customer experiences to identify the combinations of merchandising, messaging, and offers that generate the strongest revenue. Rebuy’s A/B Testing suite supports experiments across multiple Rebuy surfaces, including widgets, Smart Cart, Post-Purchase, and supported Checkout experiences.
Cart + Merchandising: Personalize the experience before checkout based on campaign source. This is where URL and UTM rules can be especially valuable for paid media—allowing you to match product recommendations, offers, and messaging with the campaign that brought the shopper to your store.
By combining post-purchase incremental revenue, continuous offer testing, and conversion-focused checkout optimization, you can generate more value from the customers your advertising is already acquiring. Start by launching an upsell + downsell flow, test which offers produce the strongest revenue, and then optimize checkout with relevant recommendations and trust-building content. For campaign-specific personalization based on traffic source, bring Cart + Merchandising into the strategy before the shopper reaches checkout.