Bundle: sell products as a set

A Bundle rewards buying products together. Instead of discounting a single item, it prices a whole set: the shopper adds the pieces of the bundle and the set gets a special price. It is a product discount, so Shopify applies it at checkout like any other, and the items stay as normal separate lines in the cart, never merged into one mystery line.

Two kinds of bundle

When you create a Bundle campaign, the builder offers two type cards. Pick the one that matches the deal you have in mind.

• Fixed bundle: a specific set of products bought together, for example "this jacket plus these gloves plus this scarf for $120". You define exactly which products make up the set.
• Mix and match: "any few from a pool for one price", for example "any 3 tees from the collection for $99". You define a pool, and the shopper picks which ones.

Fixed bundle

A fixed bundle is built from slots. Each slot is one place in the set, and you set how many units it needs and which products can fill it. A slot can list several interchangeable options, so "any one of these three mugs" is a single slot the shopper can satisfy with whichever mug they like. When a slot needs more than one unit, any mix of its options counts: a slot that needs 2 and lists two mugs is filled by two of the first mug, two of the second, or one of each. Across slots the set is strict, every slot must be filled for the bundle to count.

With a set price, the saving is the difference between the items’ normal total and your set price, and it is spread across the bundled lines so each shows its share of the discount. As with every discount in Stackable, no line ever drops below free. With a percent off, each bundled item simply gets that percentage off its own price.

Mix and match

A mix-and-match bundle is "any N for one price". You target a pool of products (a collection or a tag works well here), set how many of them make a set, and set the price for that set. The shopper chooses which items from the pool to include, and any qualifying combination of that many items gets the set price. Turn on repeat to reward every complete set, so "any 3 for $99" gives two sets of three at $99 each when the shopper buys six.

On the storefront

A fixed bundle can show a bundle builder block on the product page. It lists every piece of the set as its own row, with the product image, name, and quantity, and each name links to that product page so a shopper can open it. When a slot accepts more than one variant, the row notes that other options are available. The items go into the cart as separate lines and Shopify prices the set at checkout.

The block is cart-aware. Before anything is in the cart it offers to add the whole set. Once some of the pieces are already in the cart it marks those rows as in your cart and nudges the shopper to finish the set. For a set price it leads with the top-up cost: when only one piece is missing it names it, for example "Add the Aviator for just $12 more", and when more than one is missing it says "Complete your set for just $12 more". A smaller line underneath shows the full saving versus buying separately, so the shopper sees exactly how little it takes to complete the set; when an exact amount cannot be shown it falls back to a general message. The button reads "Complete the set" and adds only the missing units, never duplicates. When the set is complete it says so and stops prompting, unless the bundle reward repeats for every set, in which case it offers to add another set.

The block is display-only and honest about currency: if the shopper is paying in a currency other than your store currency, it hides exact amounts and shows a general savings message instead of a set price that would not match checkout, and adding to the cart still works.

How it combines

A Bundle is a product discount, so it lives in the product lane and combines with order and shipping campaigns only when the relevant "Combines with" switches are on for both campaigns. See Stacking and combinations for the both-sides rule.

Common setups