Quick summary
This post covers the main upselling techniques available to Shopify merchants, from post-purchase upsells to in-cart recommendations, comparing the top apps and explaining which approach works best for different store types. It is aimed at Shopify merchants who want to increase revenue per transaction without increasing ad spend.
Most Shopify merchants focus almost entirely on acquiring new customers. Every pound goes on ads, influencer campaigns, and SEO. Meanwhile, the customers already on the checkout page are leaving with smaller baskets than they could.
Upselling and cross-selling are the fastest ways to grow revenue without growing your acquisition budget. Increasing average order value by 20% has the same revenue impact as acquiring 20% more customers, but at a fraction of the cost.
Here is how to build an upselling system that actually works.
What Is the Difference Between an Upsell and a Cross-Sell?
These terms get mixed up constantly, but the distinction matters for your strategy.
An upsell encourages the customer to buy a higher-value version of what they are already considering. A customer looking at a 250g bag of coffee gets shown the 1kg bag at better value per gram. A customer buying a single product gets offered a bundle.
A cross-sell suggests a complementary product. The coffee buyer gets shown a cafetiere. The customer buying a pair of trainers gets shown training socks.
Both increase AOV. But they work at different points in the funnel and require different placements.
How Do Pre-Purchase Upsells Work on the Product Page?
The product page is the highest-intent page on your site outside of checkout. The customer is actively evaluating a product, which makes it the right moment to introduce bundle options, volume discounts, or upgraded variants.
Effective pre-purchase upsells include:
- Volume discounts: "Buy 2, save 10%. Buy 3, save 15%." These work particularly well for consumables and gifting products.
- Bundle builder: Offer a curated bundle that combines the product with 1-2 complementary items at a small discount.
- Variant upsell: If you sell a standard and premium version, display both with the value difference clearly articulated.
The key is relevance. An irrelevant product recommendation on the product page damages trust. The upsell must make sense to the customer immediately.
App to use: Frequently Bought Together by Code Black Belt. Pricing starts at $9.99/month. It uses AI-based recommendations and allows you to manually curate bundles. It integrates cleanly with most Shopify themes and shows bundle discounts directly on the product page.
What Are In-Cart Upsells and When Do They Work Best?
The cart page and cart drawer are underused upsell locations. The customer has already committed to buying. A well-placed recommendation here can lift order value without disrupting the checkout flow.
The most effective in-cart upsell formats are:
- Free shipping threshold progress bar: "You are £8.50 away from free shipping." This nudges customers to add one more item. Research from Barilliance shows that free shipping thresholds increase average basket size by 30% when the gap is set at 15-25% above the typical AOV.
- Frequently bought with: A single, relevant product recommendation beneath the cart items.
- Upsell to a bundle: If the customer has one item from a bundle in their cart, suggest the full bundle with a small saving.
Keep in-cart upsells to one recommendation. Two or more creates decision fatigue and increases cart abandonment.
App to use: ReConvert Upsell and Cross Sell. Cart upsell features are included from the $4.99/month plan. The interface is drag-and-drop and requires no code changes.
Why Are Post-Purchase Upsells the Highest-Converting Option?
Post-purchase upsells are the highest-converting upsell placement available on Shopify. The customer has just completed a purchase. Their card is already charged. They are in a positive emotional state. A single relevant offer with a one-click accept button can achieve conversion rates of 10-15%, compared to 1-3% for standard product page upsells.
The mechanics work because Shopify allows merchants to present a post-purchase page between the payment confirmation and the thank-you page. The customer can accept the offer without re-entering payment details.
What works in post-purchase upsells:
- Complementary consumable: If they bought a skincare device, offer the refill serum.
- Protection or warranty: If they bought electronics or homewares, offer an extended warranty or care kit.
- Discounted second unit: "Add another for 20% off" works well for gifting products.
- Subscription offer: Convert a one-time buyer to a subscriber with a post-purchase discount on their first recurring order.
App to use: AfterSell Post Purchase Upsell. Pricing starts at $7.99/month for up to 500 monthly orders. It supports multi-product post-purchase funnels, meaning you can show a second offer if they decline the first. The analytics dashboard shows accepted offer revenue clearly, so you can measure incremental lift directly.
An alternative is ReConvert, which handles post-purchase pages and thank-you page customisation in a single platform.
How Can the Order Confirmation Page Be Used for Upselling?
Most merchants use the default Shopify thank-you page. It confirms the order and does nothing else. This is wasted real estate.
Customising the order confirmation page with a cross-sell widget, a referral offer, or a first-review incentive adds value without interrupting the purchase flow. ReConvert's thank-you page builder is the most capable tool for this, allowing drag-and-drop components including product recommendations, countdown timers, and customer birthday capture for future personalisation.
AOV Benchmarks: What Should You Be Targeting?
Industry benchmarks vary by category, but Shopify merchants with active upsell programmes consistently report the following:
| Upsell Type | Average Conversion Rate | Typical AOV Lift |
|---|---|---|
| Pre-purchase bundle | 3-6% | 15-25% |
| In-cart recommendation | 2-5% | 8-15% |
| Post-purchase one-click | 10-15% | 10-20% |
| Free shipping threshold | Indirect | 20-30% on qualifying orders |
If your current AOV is under £35 for a fashion or accessories store, or under £50 for homewares, there is almost certainly room to improve through systematic upselling.
Which Upsell App Should You Use?
You do not need multiple apps running simultaneously. Pick one platform that covers your key touchpoints.
| App | Best For | Starting Price |
|---|---|---|
| ReConvert | Post-purchase + thank-you page + cart | $4.99/month |
| AfterSell | Post-purchase funnels, multi-step offers | $7.99/month |
| Frequently Bought Together | Product page bundle recommendations | $9.99/month |
| Rebuy | AI-driven recommendations across all touchpoints | $99/month |
For most merchants with under 1,000 orders per month, ReConvert or AfterSell combined with Frequently Bought Together covers all the key placements without overspending on tools.
Rebuy is the stronger option if you are doing 3,000+ orders per month and want a single platform managing all recommendation logic with machine learning personalisation.
Common Mistakes That Kill Upsell Conversions
Irrelevant recommendations: Showing a random product because it is your best seller is not an upsell. It is noise. Relevance is the single biggest driver of upsell conversion.
Too many offers: More than one post-purchase offer page works in some niches, but two or more simultaneous on-page recommendations usually underperform a single focused offer.
Discounting too aggressively: A 5-10% discount on an upsell offer is usually enough to motivate action. Going to 30-40% trains customers to wait for offers and erodes margin.
Not testing: The headline, image, and offer structure on a post-purchase page all affect conversion significantly. Run A/B tests on at least the headline and the discount level before settling on a control.
Key Actions to Take Now
- Calculate your current AOV in Shopify Analytics. That is your baseline before any changes.
- Set up a free shipping threshold in your cart at 20% above your current AOV and display it as a progress bar.
- Install Frequently Bought Together and configure bundle recommendations for your top 10 products.
- Add a post-purchase upsell using AfterSell or ReConvert for your highest-volume product.
- Customise your thank-you page with a cross-sell widget and a review incentive.
- Review your upsell relevance monthly and update recommendations based on what is actually selling together.
- Set a 30-day review cycle and measure AOV before and after each change.
Frequently Asked Questions
What is a realistic AOV increase from upselling on Shopify? Most merchants see a 10-25% increase in AOV within the first 60 days of implementing post-purchase and in-cart upsells, assuming the recommendations are relevant and the offer is compelling. The exact lift depends heavily on your product category and average basket size.
Is post-purchase upselling annoying to customers? When done well, no. Customers respond positively to relevant, discounted offers presented once after checkout. The key is relevance and restraint. One focused offer outperforms multiple aggressive offers every time.
Do I need to install multiple apps to run upsells on Shopify? Not necessarily. ReConvert covers cart, post-purchase, and thank-you page upsells in one platform. If you want strong product-page bundle recommendations as well, adding Frequently Bought Together alongside it covers all four touchpoints with two apps.
How do I measure whether my upsells are working? Track AOV in Shopify Analytics under Reports before and after implementation. For post-purchase upsells specifically, AfterSell and ReConvert both show accepted offer revenue directly in their dashboards, so you can see incremental revenue without digging into raw data.