eBay Bundle Calculator

1. Enter the normal unit price
Use the price a buyer would pay for one item before the bundle discount.

2. Choose bundle quantity and discount
The calculator multiplies the unit price, then applies the discount once to the merchandise subtotal.

3. Add unit and fulfillment costs
Enter product cost per unit and the combined shipping and packaging cost for the whole bundle.

4. Enter the fee structure
Use the percentage and fixed fee expected for one bundle transaction.

5. Compare savings and margin
Confirm that the buyer receives a meaningful saving without reducing profit below your threshold.

Regular merchandise total = Unit price × Quantity
Bundle price = Regular merchandise total × (1 − Discount ÷ 100)
Profit = Bundle price + Shipping charged − (Unit cost × Quantity) − Bundle shipping cost − Percentage fees − Fixed fee

Where:

• Quantity: number of units in the bundle
• Discount: percentage reduction from the regular merchandise total
• Percentage fees: modeled against bundle price plus shipping charged

Assumptions: The bundle is treated as one transaction with one fixed fee and one combined fulfillment cost.

What the result means

Bundle profit is the estimated amount remaining from one combined order after the entered costs.

The model does not account for tax treatment, fee caps, or inventory carrying costs.

Given:

• Unit price: $24.99
• Quantity: 3
• Discount: 10%
• Unit cost: $8.00
• Shipping charged: $5.00
• Bundle shipping cost: $9.00
• Fee rate: 13.25%
• Fixed fee: $0.30

Calculation:
Regular total = 24.99 × 3 = $74.97. Bundle price = 74.97 × 90% = $67.47. Buyer payment = 67.47 + 5 = $72.47. Fees = 72.47 × 13.25% + 0.30 = $9.90. Profit = 72.47 − 24 − 9 − 9.90 = $29.57.

Result:
$29.57 bundle profit, or $9.86 per unit.

Interpretation:
The buyer saves $7.50 on merchandise while the seller retains a positive margin under the entered costs.