SELLER TOOLKIT · US MARKETPLACE

Know your profit
before you sell.

Estimate fulfillment costs, marketplace fees, and unit economics in seconds.

✦ Instant calculations · No sign-up · No data leaves this device

01 / PRODUCT DETAILS

Build your estimate

LIVE

Sale price USD

Landed cost / COGS USD per unit

Product category Referral fee varies by category

PACKAGED SIZE & WEIGHTIN / LB

Length

Width

Height

Shipping weight

▦

Estimated size tierLarge standard-size

STANDARD

OPTIONAL COSTSPER UNIT, USD

Monthly storage allocation

Returns reserve

Ad spend per unit Optional

ACoS Used if ad spend is $0

☷ Advanced fee assumptionsEDIT RATE CARD +

Adjust these estimates to match your Seller Central fee preview. Changes recalculate immediately.

Fuel & logistics surcharge

Referral rate override

Small standard base fee

Large standard base fee

Large bulky base fee

Extra-large base fee

02 / YOUR UNIT ECONOMICS

Profit snapshot

● Live

ESTIMATED NET PROFIT / UNIT

$12.40

41.3% marginper unit

Break-even price$15.28Estimated minimum sale price

Total Amazon fees$6.09Referral + fulfillment

Fee breakdown

PER UNIT

Referral fee$4.50

FBA fulfillment incl. 3.5% surcharge$4.00

Storage allocation$0.00

Ads$0.00

Returns reserve$0.50

Product cost (COGS)$7.50

Total costs incl. Amazon fees$16.59

ⓘ

Planning estimate, not a quote. Uses editable fee assumptions intended to approximate 2026 US non-peak FBA fees. Actual fees depend on product classification, packaged measurements, shipping weight, price bands, and current Amazon policies. Verify in Amazon Seller Central.

BUILT FOR SELLERS

Clear numbers. Better decisions.

Live estimates

Change price, dimensions, or costs and see the impact instantly.

Your assumptions

Open the rate card to fine-tune fee assumptions for your product.

Private by design

All calculations run locally. Nothing is sent to a server.

Know your profit before you sell.

Build your estimate

Clear numbers. Better decisions.

Know your profit
before you sell.