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Calculators / Minimum price

Minimum-price builder

The lowest total price that still pays your fees, postage and packaging, and leaves the profit you want.

Rates verified on

Amazon media: 15% of item + shipping.

Amazon media closing fee: $1.80.

Never go below this, whatever the formula says.

Shows the item-price part of the minimum.

Your minimum

The formula

Minimum total = (fixed fee + postage + packaging + target profit) ÷ (1 - referral rate), rounded to the cent, then raised to your floor if you set one.

Why divide? The referral fee is a percentage of the price itself, so every dollar you add to the price also adds to the fee. Dividing by (1 - rate) solves for the price where what's left after the percentage fee covers everything else. Repricers that set a minimum on the total (item + shipping) can use this number directly; if yours sets the item price only, subtract the shipping you charge.

Media Mail minimums, 1-10 lb

15% referral, $1.80 closing fee (Amazon media), $0.35 packaging, $2.00 target profit, no floor. Example inputs: put in your own.

Media Mail from USPS Notice 123 (Oct 4, 2026); Amazon media fees from sell.amazon.com/pricing, both verified Oct 14, 2026.
WeightMedia MailMinimum totalProfit at minimum
1 lb$4.39$10.05$2.00
2 lb$5.13$10.92$2.00
3 lb$5.86$11.78$2.00
4 lb$6.60$12.65$2.00
5 lb$7.34$13.52$2.00
6 lb$8.08$14.39$2.00
7 lb$8.81$15.25$2.00
8 lb$9.55$16.12$2.00
9 lb$10.29$16.99$2.00
10 lb$11.02$17.85$2.00

Selling books on Amazon? See minimum prices by weight, 1-20 lb, at three profit targets.

Sources

Rates verified on from each official page below.

Minimum total with 1 lb Media Mail ($4.39): $10.05.

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