Upselling and Cross-Selling on Squarespace: The Complete Playbook
Upselling and cross-selling are two of the highest-ROI strategies in ecommerce. They work because they target customers who have already decided to buy — the hardest part of the sale is done. The question is whether you can add more value to a transaction that's already in motion.
On Squarespace, neither upselling nor cross-selling is supported natively. This guide covers everything: the difference between the two, the strategies that actually work on Squarespace, and how to implement them without a developer.
Upselling vs Cross-Selling: The Actual Difference
Upselling means suggesting a higher-value version of the product a customer is already considering. A customer looking at your $80 coffee grinder might be upsold to the $120 model with more features. The goal is a more expensive version of the same thing.
Cross-selling means suggesting a different, complementary product. A customer buying the $80 coffee grinder might be cross-sold a bag of single-origin beans, a cleaning kit, or a ceramic dripper. The goal is more products added to the same order.
Both increase average order value. Both work at different stages of the buying journey. And on Squarespace, both require a plugin — the platform has no native implementation of either.
The Five Moments Where Offers Work
Most Squarespace store owners think of upselling as something that happens on the product page. But that's just one of five moments where customers are open to additional offers.
1. On the Product Page
The customer is evaluating a product. They're reading the description, looking at images, considering the price. A cross-sell suggestion here feels like advice — relevant, timely, helpful. This is where you suggest complementary products or a bundle deal.
2. In the Slide-Out Cart
The moment a customer adds something to their cart, their purchase intent spikes. The slide-out cart captures that moment — the drawer opens and an offer appears inside while they're still on the product page. This is a high-intent, low-friction moment for an additional suggestion.
3. On the Cart Page
The customer is reviewing their order before paying. They've committed to the purchase. An offer here — positioned clearly without cluttering the checkout flow — can add significant value to an order that's already confirmed in the customer's mind.
4. On the Order Confirmation Page
Post-purchase is underestimated. The customer has just bought something. They're in their most positive frame of mind. They trust you. An offer here doesn't feel like pressure — it feels like a natural next step. They'll need to check out again for any addition, but conversion rates on confirmation-page offers can be surprisingly strong.
5. On the Order Status Page
Customers check their order status multiple times while waiting for delivery. Each return visit is another chance to show a relevant product. This is a warm audience — they're already customers, they're already engaged with your brand, and they're already on your site.
Implementing Upsells and Cross-Sells on Squarespace
UpsellGrow covers all five moments with three offer types: cross-sells (manual complementary suggestions), bundles (grouped products at a discount), and frequently bought together (data-driven pairs from your order history).
For each offer, you choose the page, the position, the products, and the rules. The condition builder lets you add AND/OR logic — cart value minimums, product exclusions, schedule windows — so offers only fire when they should.
A Simple Starting Strategy
Week 1: Create one cross-sell offer on your best-selling product. Place it below the Add to Cart button. Measure for two weeks.
Week 3: Add a bundle offer featuring that same product with its most natural complement. Place it in the slide-out cart.
Week 5: Add a cross-sell to the cart page. Right of cart is typically the highest-converting position.
Week 7: Add a post-purchase offer on the order confirmation page. Keep it tightly relevant to the most common products ordered.
Build the system one layer at a time. Measure each addition. By week eight, you have five offer touchpoints active and data showing which ones are working.
Ready to Start Earning More From Every Order?
UpsellGrow adds upsells, cross-sells, bundles, and frequently bought together offers to your Squarespace store — across 5 pages and 19 positions. No coding. Setup takes minutes.