The Shopify Bundle Calculator evaluates a multi-item bundle by comparing the bundle price with the sum of individual prices and by measuring the bundle’s contribution profit. It helps merchants decide whether a bundle discount is attractive to customers without giving away too much margin.
Enter the combined regular price, combined product cost, fulfillment and packaging costs, and the proposed bundle price. The calculator reports the customer savings rate, contribution profit, and margin so that merchandising teams can test different bundle structures before publishing them.
1. Add regular prices
Enter the total price customers would pay if each item were purchased separately.
2. Enter the proposed bundle price
Use the actual selling price before tax.
3. Combine product costs
Add the landed costs of all items included in one bundle.
4. Include bundle-level costs
Enter extra packaging, fulfillment, and transaction fees.
5. Assess value and margin together
A strong bundle usually needs a visible customer saving and an acceptable contribution margin.
Formulas:
Bundle discount % = (Regular total − Bundle price) ÷ Regular total × 100Percentage fees are calculated on the bundle price, then the fixed fee is added.
The main result shows the percentage of bundle revenue left after the entered variable costs.
The calculation does not estimate whether bundling will change conversion rate, average order value, or return behavior.
Given: Items total $90 separately, bundle price is $75, product cost is $32, fulfillment and packaging are $6, and fees are 3% + $0.30.
Calculation: Customer savings = $90 − $75 = $15. Discount = $15 ÷ $90 = 16.67%. Fees = $75 × 3% + $0.30 = $2.55. Contribution profit = $75 − $32 − $6 − $2.55 = $34.45. Margin = $34.45 ÷ $75 = 45.93%.
Result: Bundle contribution margin = 45.93%.
The offer saves the customer 16.67% while retaining $34.45 in contribution profit.
Use the prices customers would realistically pay separately at the time the bundle is offered. Inflated comparison prices can misrepresent the savings.
Yes. Add the regular prices and costs for the exact quantities included in one bundle.
Add all incremental packaging and assembly expenses to fulfillment and packaging cost.
Not necessarily. A smaller margin may be acceptable if the bundle raises average order value, moves slow inventory, or reduces fulfillment cost per item.
The customer savings will be negative, indicating a premium bundle. That may be reasonable only when the bundle adds exclusive value or service.