How the pieces connect
Product sets are the products in the offer — Set #1, Set #2, and so on. Conditions and rewards attach to those sets. A condition counts items from a set (when this tier applies). A reward discounts a set (what the shopper gets, and on which products). Neither piece stands alone: every condition and every reward names a product set. You choose the rest:- One set or several
- One condition or several on the same card (all must be true)
- The discount on the same set as the condition, or on a different set
- As many condition-reward cards as you need — each card is one tier
1
Product sets
Name the products in play. Each set is one product, or a collection.
2
Conditions
Attach quantity rules to those sets: Customer buys at least 2 items from Set #1.
3
Rewards
Attach discounts to those sets: Customer gets 19% off Set #1 — or off a different set.
4
Widget
Customize the renderer and CSS so the storefront matches the brand. Product sets, conditions, and rewards stay the source of truth for who qualifies and what is discounted.
Example: volume on one product
Buy 2 of this shampoo, save 19%.
The widget can show on that shampoo’s page. At checkout, 19% off applies when the quantity is 2 or more.
The condition and the reward both name Set #1. Change only the product set, and the same “buy 2, 19% off” becomes a different offer:
Volume vs mix and match is not a type you pick. It is one way of combining the same pieces.
Example: discount a different set
The reward can point at a different set than the condition. Buy the phone, get 20% off a case:
The phone is required. The discount lands on the case. Two conditions on the same card must both be true.
More than one tier
Add new condition-reward adds the next card against the same product sets.- Card 1: at least 2 from Set #1 → 19% off Set #1
- Card 2: at least 4 from Set #1 → 25% off Set #1
Product sets
Each set has an Included item type.Single Product
You pick one product. Use this when the offer is that exact item. The shopper sees that product (variant + quantity). The widget can show on that product’s page.Single Product (Collection-backed)
You pick a collection, not one product. Use this when the same volume offer should run on every product in a collection, without adding each product by hand. On a product page, Knit uses the product the shopper is viewing, but only if it is in that collection. The shopper is still buying that one product. If the page product is not in the collection, this set does not apply on that page.Shopify Collection
You pick a collection. The shopper can choose more than one product from it. The widget lists products from the collection. Quantity on each row starts at 0 until the shopper adds it. Quantity and discount rules apply across those picks.How to choose
You can combine sets. Example: Single Product for a hero item, plus Shopify Collection for add-ons.
Conditions
A condition is: Customer buys this many items from a product set.
What “items from” means depends on the set:
- Single Product and Single Product (Collection-backed) — units of that one product.
- Shopify Collection — total units the shopper picked from the collection.
Rewards
A reward is: Customer gets this discount on a product set. Percentage — a percent off those items (0–100). Example: 19% off. Fixed amount — a money amount off, in your shop currency. Then choose how it spreads:
The discount is applied at Shopify checkout, not as a precomputed product price. Keep the Knit automatic discount Active in Shopify admin → Discounts.