Upsell vs Cross-Sell vs Downsell, Explained

The three words get used as if they were interchangeable, and they are not. An upsell asks the shopper to spend more on the same thing. A cross-sell asks them to add something else. A downsell offers a cheaper alternative to someone who is about to leave without buying. They sit in different places in a store, need different data, and in a few cases need different Shopify plans. This page defines each one, with an invented example, maps where each fits in a Shopify store, and says which parts Shopify does by itself. If you are choosing between an upsell vs cross-sell as your first project, the last section gives a recommendation.

Three definitions, one example each

All the products below are made up for illustration.

Upsell. The shopper is looking at a 30 dollar stainless water bottle. The page offers the 40 dollar insulated version with a larger capacity. The shopper spends 10 dollars more and receives a better version of the same kind of product. The test is that the new item replaces the old one in the cart.

Cross-sell. The same shopper has the 30 dollar bottle in the cart. The page suggests a 6 dollar cleaning brush and a 12 dollar carrying sleeve. The new items are added next to the bottle, and the order grows by the price of whatever they accept. The test is that the new items are added, not swapped.

Downsell. The shopper has the 40 dollar insulated bottle in the cart and leaves the page, or the item is out of stock. The store offers the 30 dollar model instead. Revenue per order is lower than the first choice, but the order exists. The test is that the offer is a cheaper alternative that appears when the first option is not going to convert.

A quick way to keep them apart is to ask what happens to the original item. Upsell replaces it with a better one, cross-sell keeps it and adds to it, downsell replaces it with a cheaper one.

Where each fits in a Shopify store

Think of the shopper's path as four stops. At each stop one of the three tools is natural, and the others are awkward.

• Product page. The shopper is still choosing. This is where an upsell works, because comparing the model above with the model below is the decision they are already making. Cross-sells also work here when the extra item is a clear accessory.
• Cart. The choice is made and the shopper is reviewing. Cross-sells fit best here: small, low-friction add-ons. An upsell in the cart asks the shopper to reopen a decision, which is why it is harder to do well.
• Checkout. The shopper is about to pay. Only very small, very obvious additions belong here. On Shopify, customizing the checkout pages is also the most restricted stop, as the next section explains.
• After payment. The order is complete, so an add-on cannot put the first order at risk. This is the place for a one-click extra, again with plan limits noted below.

A downsell does not map to one stop. It is triggered by an event, such as a sold-out variant, an exit, or a rejected offer, rather than by a position on the page.

What Shopify does natively

Shopify's Search & Discovery app is the native source for product recommendations, and its Help Center page makes one distinction that matters here. It defines "complementary products" as "products often bought in addition to a selected product," and "related products" as "products that are similar to a selected product." In the vocabulary above, complementary recommendations are cross-sell material and related recommendations are closer to upsell or downsell material, since they show alternatives.

Three details from that page set the limits:

• Recommendations display on the product page. The page does not say they appear in the cart.
• The complementary products block is "only available in compatible themes," so your theme has to have the section.
• "Complementary products must have stock above 0 to display."

The page does not mention any Shopify plan requirement for these blocks. It also does not document anything for downsells, which means a downsell is something you build with an app, a theme section, or copy.

The distinction between the two recommendation types is the only point this page repeats from the setup guide. For the step-by-step configuration of the cross-sell side on a product page, see frequently bought together on Shopify.

What requires which plan

Checkout is where plan limits bite, and this is the part merchants most often get wrong. Shopify's Help Center pages on checkout apps and checkout extensibility state:

• Apps that customize the information, shipping and payment pages, including checkouts from draft orders, "are available only to Shopify Plus."
• Post-purchase app extensions, which "add content after your customer completes their payment," are available on the Basic Shopify plan or higher, as well as on Shopify Plus. You need a third-party checkout app that supports them, and the page says you can use only one checkout app to add post-purchase features at a time.
• Eligible apps that customize the thank you and order status pages are listed for both Basic and higher plans and Shopify Plus.

So an upsell inside checkout requires Shopify Plus. A post-purchase offer does not, but it depends on the app you install. One more limit from Shopify's Buy X get Y page: discounts created in the Shopify admin do not apply to the post-purchase page at checkout, so a native Buy X get Y discount cannot be the price mechanism of a post-purchase offer.

A placement map

The table is deliberately conservative. Where Shopify's documentation is silent, the cell says so, because a placement that works in one theme or app can be absent in another.

Pricing each offer

Price the three tools against different benchmarks. An upsell should cost the shopper a small step from what they already chose, since the 10 dollar step in the example above is easier to accept than a 30 dollar one. A cross-sell is usually priced as a share of the main item, a few dollars on a 30 dollar order. A downsell should be profitable by itself, because it appears when the alternative is losing the sale entirely. In every case the margin on the added item, not its price, decides whether the offer helps. Discounts attached to upsells deserve their own treatment, and the order-value math that sits behind all three starts with average order value, and volume discount offers cover the price-break side.

Upsell vs cross-sell: which to start with

For most Shopify stores, start with a cross-sell on the product page. It needs no checkout customization, it does not depend on Shopify Plus, it does not ask the shopper to change a decision, and it can be tested on one product before you roll it out. The app's Frequently bought together template is described as "Suggest matching products on the product page", with the example "Add the matching case for 10% off." Choose pairs where the second item really belongs with the first, keep the add-on small relative to the main item, and compare orders that included it with orders that did not.

Add an upsell after that, on the product page, once you know which products have an obvious premium version. Treat anything inside checkout as a separate project, because it requires Shopify Plus, and treat post-purchase offers as a third project that depends on the checkout app you choose.