Product Page Best Cross-Sell: Turn Single-Item Orders Into High-Value Baskets

Getting a shopper to convert matters. But getting them to add one more item is where your margins actually improve. The Best Cross-Sell banner shows the complementary products each shopper is most likely to want — right on the product page, right when intent is highest.

Fixed Costs Per Order Make Basket Size Your Most Efficient Lever

Every order your store ships carries a fixed cost — payment processing, packaging, shipping, customer service. Whether a shopper buys one product or five, most of those costs stay exactly the same.

That means the difference between a single-item order and atwo-item order is almost pure margin. You have already done the hard work of acquiring the customer. You have already absorbed the fixed cost of the order. Adding one more item to that basket is the most efficient revenue you can generate.

Most stores leave this on the table. Not because they do not want to cross-sell — but because doing it well requires knowing which complementary products each shopper is actually likely to add. Generic "you might also like" sections do not cut it.

Predict What Each Shopper Will Add Next

The Best Cross-Sell banner uses Clerk.io's AI to predict which complementary items a shopper is most likely to add — based on real purchase behavior and a deep understanding of your catalog.

If someone is viewing football boots, the banner can surface matching guards in the same brand and color — even if that exact combination has not been frequently bought together yet. The AI understands product relationships, not just purchase history.

Shoppers see everything they need from your store without searching around. That removes friction at the exact moment they are ready to buy — and increases the chance they add more to their cart.

Stores using the Best Cross-Sell banner see an average 50% increase in basket size and a 4% uplift in order value on purchase sinfluenced by it.

How It Works

1.    A shopper views a product. They are already interested — this is the highest-intent moment on your site.

2.    Clerk.io's AI identifies the complementary items most likely to complete what they are looking at — based on real behavior and catalog understanding.

3.    The banner surfaces those items directly on the product page, so shoppers see accessories and related products without having to search for them.

4.    Single-item orders become multi-item orders. Each customer becomes more profitable —with almost no extra work from your team.

Frequently Asked Questions

What is the Best Cross-Sell banner?

A banner placed on product pages that shows shoppers the complementary items they are most likely to add to their order. It uses Clerk.io's AI to predict relevant accessories and related products based on real behavior and your catalog.

How is cross-selling different from showing alternatives?

Alternatives help shoppers who are not quite sold on the current product find a better fit. Cross-selling targets shoppers who are readyto buy — and shows them what to add alongside it. Both banners work on the product page but serve different moments in the decision process.

How does the AI know which products to recommend?

Clerk.io combines real purchase behavior with a deep understanding of your catalog — including product attributes, categories, and relationships. This means it can recommend complementary products even when they have not been frequently bought together yet.

What results does it deliver?

Stores using the Best Cross-Sell banner see an average 50% increase in basket size and a 4% uplift in order value on influenced purchases. Because fixed order costs stay the same regardless of basket size, even a smallincrease in items per order has a significant impact on margin.

Does it require ongoing management?

No. Clerk.io handles the recommendation logic continuously. As your catalog and shopper behavior evolve, the banner stays relevant without any manual input from your team.

The Most Profitable Revenue Comes From Orders You Already Have

You do not need more traffic to improve your margins. You need more from the shoppers already on your product pages. Book a free demo to see the Best Cross-Sell banner in action.