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Set up a Complete the bundle offer

Pair the current product with set products so shoppers buy the complete set at a discount.

Updated November 9, 2026

Complete the bundle pairs the current product with products you pick, such as a shampoo with its conditioner. It's a Mix and match offer with a set companion. Shoppers buy the whole set at the prices you choose.

Set the Products rule before you publish. A new bundle starts on All products. Without that step, the deal applies to every product in your store.

Set up the offer

  1. In Shopify admin, open Apps → Section Store → Bundles.
  2. Click Add bundle, then Build your own, then Choose on Complete the bundle. The bundle starts with a Single offer at full price and a Complete the bundle offer. On an existing bundle, click Add offer, then Complete the bundle. That offer is called "Complete the set". Both start at 10% off each item.
  3. Open the offer. It's called Complete the bundle from the preset, and "Complete the set" when you add it.
  4. Open Item 2 and click Select products and variants.
  5. Pick the companion product and its variants, then confirm.
  6. Set Quantity and Price on each item.
  7. Click Add item to add more products to the set.
  8. Under Products, pick Selected products or Selected collections. All products is the default for a new bundle. Without this step, the deal applies to every product in your store. Keep All products only if you want that.
  9. Click Select products or Select collections, then pick the items and confirm.
  10. Click Publish, or Save on a live bundle.

How it works

  • One companion: the row shows that product and shoppers can't swap it.
  • Several companions in one item: the first available one fills the row, and shoppers can swap it with the picker.
  • Turn on Require customers to choose a product to start the row empty.
  • Everything else works like Mix and match. The discount applies only while the whole set is in the cart.

If it doesn't work

  • "Add a companion product to publish": the item has no product. Click Add companion product and pick one.
  • The companion row says Product unavailable: no product in that item's list can be sold. Add products that are in stock. See Why are products missing from the Mix & Match picker?

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