What is a bundle kit on a made to order product, and how do I price the kit at the total?

Shopify describes a bundle as a set of two or more related products, commonly offered at a discount, and its own fixed bundles can hold up to 30 products. That works for stock. It does not work when one part of the bundle is cut to the customer's size and its price is not known until the customer types it.

What is a bundle kit on a made to order product, and how do I price the kit at the total?

A bundle kit is the main product plus its add-ons at one price: an awning with motor, brackets and fitting, or a shirt with matching shorts and socks. The kit price is worked out at the total, after the shopper has set the size and options, so a part cut to size is priced for that size. The shopper sees the kit price next to the separate prices, and the saving is taken again at checkout. Inchy, a Shopify app for made to order products, sells kits this way; Bundle kits are part of its Made to measure plan.

The demo's Evening comfort pack at 420 cm. One of its two parts is cut to the width, so the kit price follows the size.

How is a kit different from a bundle of stock?

A stock bundle is a fixed list with a fixed price: a razor and five blades, a shampoo and a conditioner. The price can be written on the product because nothing in it changes. Shopify's bundles need a bundles app, and its own fixed bundles hold up to 30 products, so stock sets are well covered.

A made to order kit has two things a stock bundle does not.

• A part priced by size. A winter cover cut to the awning's width, a matching valance, a sail's edge rope. Its price is not known until the shopper types the size.
• A part priced by the main choice. Brackets that depend on the wall, a motor that depends on the awning's weight, socks that match the shorts the shopper picked.

So the kit cannot have a price written on it. It has a rule: these parts, at the prices they have for this size and these choices, less this saving. The price is a result, not a setting.

What does "priced at the total" mean in numbers?

Take the demo awning. The Evening comfort pack is LED lights in the arms, a fixed £149.00, plus a winter cover cut to the width, with 15% off the pair. The winter cover costs £60.00 at 250 cm wide, £77.00 at 350 cm, £92.40 at 420 cm and £121.00 at 550 cm. The kit price moves with it.

At every width the shopper sees the kit price with the separate price struck through, so the saving is plain. The percentage is the same at every size, and the pounds grow with the awning, which is how it should be: the shop sells more cloth and more lights on a bigger job and shares a little of that.

The t-shirt demo has the stock version of the same thing. Its "Gift set" is a matching tote bag at £9.95 plus gift wrap and a card at £3.00, £12.95 separately and £10.36 as the set, 20% off. No size in it, so the price never changes, but it sits in the same place on the page and works the same way.

How do I set the kit up?

In Inchy a kit is built from add-ons you already have on the product.

1. Add each part as an add-on with its own price rule: a fixed amount, an amount per metre or square metre of the main product, or a percentage. The winter cover in the demo is priced for the width, so its price changes with the awning.
2. Name the kit, pick the add-ons that go in it, and set the saving off the total of the parts. The demo uses 15% on the awning pack and 20% on the shirt set.
3. Write one line under the name that says what is in it in plain words. The demo says "LED lights and a winter cover cut to your width".

The builder then shows the kit above the single add-ons, with "Add the set" as a button, and the shopper can still tick the parts one at a time if they prefer. How an awning shop should price add-ons like a motor or a winter cover covers the add-on rules the kit is built on.

What does the shopper see in the price breakdown?

Each part at its kit price, not a lump. When the set is added at 420 cm, the breakdown reads: made to size £1,612.95, LED lights in the arms at the set price £126.65, winter cover cut to your width at the set price £78.54, total £1,818.14, "You save £36.21 with the set". The awning has not changed price. The two parts have each been reduced by 15%, and the saving is shown as one line.

Showing the parts matters for two reasons. The shopper can see what they are paying for, which is the first thing Baymard's checkout research points at: "extra costs too high" is the reason 40% of shoppers who abandoned an order gave. And the workshop gets a list, not a bundle name, so the production sheet says "LED lights" and "Winter cover, 420 cm" on their own lines with their own tick boxes.

Does the kit price hold at checkout?

It should, and with Inchy it does. The checkout works the price out again from the same rules, including the kit saving, so the basket total equals the page total on every Shopify plan. That is not a given on Shopify: changing a line's price at checkout normally goes through the Cart Transform API, and Shopify's documentation says only development stores and stores on a Shopify Plus plan can use apps with its update operations. Why checkout prices can differ from the product page goes into that.

Which kits sell?

The ones that save the customer a decision. A few that come up again and again in made to order shops:

• Awning plus motor, wind sensor and brackets for the wall type. The customer does not know which brackets they need; the kit does.
• Awning plus winter cover and LED lights, as in the demo.
• Shade sail plus posts, fixings and turnbuckles, one per corner.
• Team shirt plus shorts and socks in the same colour, one kit per player.
• Any made to order item plus fitting, where the fitting price depends on the size.

Keep the kit small, two or three parts, and name it for what it does, not what is in it. "Evening comfort pack" says more than "LED and cover set".

Questions and answers

Can a kit include a part from another product?

The parts are add-ons on the product the shopper is building. A matching tote bag is an add-on on the shirt, with its own price. It reaches the order as its own line.

Can the shopper still buy the parts on their own?

Yes. The single add-ons stay under the kit with their own prices, and the shopper ticks them one at a time if they do not want the whole set.

Does the kit appear on the production sheet?

As its parts. Each add-on in the kit is its own line with its own tick box, so the workshop sees "LED lights" and "Winter cover, 420 cm", not a set name.

Which plan has Bundle kits?

Made to measure, at $99 a month, which also includes prices by size and every look and style. Unlimited products, billed by Shopify, with a 7-day free trial.

Who makes Inchy?

InterioApp. We have priced and sold made to measure products since 2011, in our own shop first, and our quoting software and calculators are used by made to measure businesses in the UK, Europe, Australia and New Zealand.

Pick the two add-ons your customers most often buy together, make them a kit with a modest saving, and watch how many orders take it. See Inchy and try the live builder. Start the 7-day free trial on the Shopify App Store.

Sources

• Shopify Help Center, Product bundles: a bundle is a set of two or more related products, commonly offered at a discount; a bundles app is needed to create bundles.
• Shopify Changelog, Support for up to 30 products in a bundle: fixed bundle limit raised from 10 to 30 products, 31 January 2024.
• Baymard Institute, Cart abandonment rate statistics: "extra costs too high" 40%; page updated 22 September 2025.
• Shopify.dev, Cart Transform Function API: only development stores or stores on a Shopify Plus plan can use apps with update operations.
• Inchy live demo: the Evening comfort pack and the Gift set, part prices at 250, 350, 420 and 550 cm, and the breakdown with the set added, read on 1 November 2026. Savings worked out as the difference.

Written with AI. Every figure is checked against the sources listed above.