BUNDLES & PROMOTIONS

Bundle & BOGO Profit Calculator

Calculate bundle or BOGO contribution after product, fulfillment, payment and advertising costs using your own assumptions.

Currency: USD display. Enter all prices and costs in one currency; no currency conversion is performed.

Offer and cost assumptions

Units in bundleEnter a whole number from 2 to 100.Regular price per unitBefore the bundle discount.Bundle discountDiscount applies to total regular-price value.Product cost per unitYour landed or otherwise fully allocated unit cost.Fulfillment per orderPacking, handling and shipping cost you pay per bundle order.Payment fee rateEnter your effective variable payment rate; zero is allowed.Fixed payment fee per orderUse the provider charge that applies to this order.Ad cost per orderOptional acquisition cost allocated to this bundle.

Planning estimate only. Excludes overhead, tax, returns and any costs not entered. The break-even discount holds your costs constant.

Bundle economics

Bundle contribution after entered costs

$20.40Contribution margin: 45.3%

Discounted bundle revenue$45.00

Regular-price bundle value$60.00

Discount amount$15.00

Total product cost$18.00

Payment fees$1.61

Contribution per unit$10.20

Break-even discount ceiling60.0%

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Bundle and BOGO profit: price the offer after costs

Model the contribution left by a multi-unit bundle or a buy-one-get-one offer after product cost, order fulfillment, payment processing and acquisition cost. The discount is applied to the combined list price; all costs are your inputs.

How the bundle and BOGO calculator works

Set the number of units in the offer, regular price and unit cost for one item, then enter the discount and per-order costs. A two-unit BOGO with one unit free is modeled as two units and a 50% discount on their combined list value. A “buy two, get one” offer can be modeled as three units with a 33.33% discount.

The tool treats fulfillment, fixed payment charge and ad cost as per-order amounts. Payment percentage applies to discounted bundle revenue. It does not assume that the payment provider refunds fees on returns or that advertising cost changes with basket size.

Formula and a checked example

Bundle revenue = units × regular unit price × (1 − discount rate). Contribution = bundle revenue − units × unit cost − fulfillment per order − (bundle revenue × payment rate + fixed payment fee) − ad cost per order. Contribution margin = contribution ÷ bundle revenue.

For two $30 items at 25% off, bundle revenue is $45. With $9 unit cost, $5 fulfillment, a 2.9% payment rate plus $0.30 fixed fee, and no ad cost, modeled contribution is $20.395, or $10.1975 per unit; margin is about 45.3%. Currency display rounds to cents.

Use the break-even discount carefully

The break-even discount output is the approximate maximum discount before this order contribution reaches zero under the costs entered. It is capped for display between 0% and 100%, and assumes the same unit costs and per-order expenses. A positive contribution does not prove the promotion is incremental or profitable after overhead.

Before launch, compare the offer with a single-item order and your margin floor. Include shipping subsidies, packaging, discounts funded by suppliers, taxes, returns and marketplace fees where applicable. Run a controlled test and evaluate incremental contribution rather than revenue alone.

Bundle and BOGO calculator FAQs

How do I model a buy-one-get-one offer?+

Enter two units and a 50% discount when both units have the same regular price. Add the actual per-order fulfillment and payment costs.

Does bundle contribution equal net profit?+

No. It subtracts only the product, fulfillment, payment and ad costs entered here. Overhead, tax, returns and other expenses are excluded unless included in an input.

What does break-even discount mean?+

It estimates the largest discount before modeled contribution reaches zero, holding entered per-unit and per-order costs constant.

NEXT STEP

Test the offer against contribution, not revenue alone.

Replace examples with your actual unit and order costs before comparing promotion ideas.Explore the tools