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Seller Profit Doctor
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An example shop selling on Amazon, with made-up numbers. Figures marked Estimate rest on third-party fee rates until we check them against a real seller's Fee Preview.

Example shop · Amazon · one month

GradeGood, with room to improveBased on 4 of 5 checks. Includes about $1,861 a month estimated from third-party Amazon fee rates. What each unit keeps uses estimated Amazon fees.

You keep $7.03 of each $29.99 sale, about $7,030 a month.

That’s before paying yourself. No sure losses on Amazon's official fees at these numbers.

EstimateAbout $1,861 a month estimated from third-party fee rates. Kept apart from sure dollars; the grade counts them.

From about $29,990 a month in sales (1,000 units at $29.99), about $359,880 a year. Estimate from your answers. This page shows an example; yours uses your own answers.

Profit check-up

Example shop · sold on Amazon

One month · 1,000 units at $29.99

Money in

  • Unit sales 1,000 × $29.9929,990.00
Total in29,990.00

Money out

  • Referral fees 1,000 × $4.50−4,500.00
  • FBA fees 1,000 × $6.02, estimate−6,020.00
  • Professional plan−39.99
  • Landed cost 1,000 × $6.90−6,900.00
  • Sponsored Products 1,000 × $5.50−5,500.00
    Lost: over break-even, estimate−1,657.89(crossed out: this loss has a fix)

    Fix: Bring campaigns to ACoS 41.9% or lower: up to +$1,658

Total out−22,959.99
You keep today$7,030.01
Per $29.99 unit$7.03
Share of money in23.4%
GradeGood, with room to improve

Thank you for selling online.

Red lines are losses. Green lines are the fixes.

Your biggest loss, with its fix

Sure dollars first, biggest first. Tap “I’ll do this” on the fixes you’ll try, and the total adds them up.

  1. Hands threading tiny beads on a jeweler's bench, seen from above, with pliers beside them

    Biggest lossEstimate

    Sponsored Products above break-even ACoS: about $1,658 a month

    At your numbers, Sponsored Products cost $5,500 a month at ACoS 60.0%, about $9,167 in ad sales. A unit keeps 41.9% of its price before ads, so the ads lose about $1,658 a month.

    A month
    −$1,658
    Your ACoS
    60.0%
    Break-even ACoS
    41.9%

    The fixEstimate

    Lower bids or pause keywords until campaigns run at ACoS 41.9% or lower (Campaign Manager). If ad sales and your other orders hold, you'd keep up to $1,658 more a month.

    +$1,658a month, up to

    Risk: Cutting ads can cut organic rank and total sales, which is why it's 'up to'. Launches run above break-even on purpose, and attribution windows move ACoS either way.

    How we worked it out

    break-even ACoS = profit before ads ÷ price = $12.57 ÷ $29.99 = 41.9%; ad sales = spend ÷ ACoS = $5,500.00 ÷ 60.0% = $9,166.67; loss = ad sales × (ACoS − break-even) = $1,657.89

    value = ad sales × (ACoS − target) = $9,166.67 × (60.0% − 41.9%) = $1,657.89

    A campaign loses money when its ACoS (ad spend ÷ ad sales) is above the product's break-even ACoS, its profit before ads as a share of the price. Amazon publishes no ACoS benchmark; vendor medians run about 28–34% with a very wide spread, so the seller's own break-even is the test (WisePPC, Apr–Jun 2026).

Solid: your price isn't just over one of Amazon's price lines.

Solid: at 1,000 items a month, Professional costs less than Individual would.

Solid: your price covers your landed cost and Amazon's fees.

Not checked yet: your packed size and weight (FBA size lines, storage), returns, stock over 6 months old, days of stock on hand. Go deeper, about 30 seconds of extra questions, adds them. It comes soon.

Amazon's fees on one unit

Referral fee (15%)
$4.50
FBA feeEstimate
$6.02
Selling plan, per unit
$0.04
Total
$10.56

On a unit at $29.99. Lines marked Estimate come from third-party rate cards; your Fee Preview shows your real fees.

Good to know

Costs with no fix you control. Never counted as losses.

  • Lost and damaged units: Amazon owes you when it loses or damages units in its warehouses, or refunds a buyer who never sends the item back. Since March 31, 2025 it pays your sourcing cost, not the sale price, using its own estimate when you haven't entered yours; since October 15, 2025 claims for lost or damaged units must be filed within 60 days. Nobody can know how much is owed without your account data, so this check shows no amount.
  • Peak fees: From October 15, 2026 to January 14, 2027, every FBA unit pays about $0.32 more, plus the surcharge: about $0.33 a unit, about $331 a month at your sales (estimate). The fee is set on the day a unit ships.Estimate

You could keep about$0 more a month

Tap “I’ll do this” on a fix to add it here.

Estimate from your answers, if orders hold · 0 of 1 fix picked

Rates and assumptions

Fixed formulas; no AI computes a number.

Rates as of

Amazon referral fees, the media closing fee and the plans as of October 13, 2026 (sell.amazon.com/pricing, official), checked October 13, 2026.

EstimateFBA, storage, aged-stock, low-inventory, placement, returns, peak and coupon fees come from third-party 2026 rate cards (Amazon's tables are behind the Seller Central login): every figure built on them is marked an estimate and shown apart from the loss total; the grade includes them and says how much. Your Fee Preview shows your real fees.

We check every rate again by January 13, 2027. See every rate we use

What we assumed

Paid once, never a subscription

Want every loss, with the steps?

This check found about $1,861 a month estimated from third-party fee rates at its numbers. The free result shows the top three. The reports show every loss that applies, with the steps to fix each one.

Profit report

$19.99once

For one shop that wants to know where the money goes.

  • Every loss that applies, ranked by dollars, each with its fix, value and risk line
  • Numbered steps for each fix: “do today” and “test it”
  • A few more questions inside the report, for the smaller losses the free check doesn't ask about
  • Guardrails: break-even price, break-even ACoS and ROAS, the most an ad can cost per sale, the shipping charge that breaks even on orders you ship
  • A reimbursement checklist for lost or damaged units
  • Profit and target price for up to 5 products
  • Every know-this fact, and the full dated fee table with sources
  • A 30-day plan
  • Page + PDF
Start with your free check-up

Full audit

$29.99once

For shops with many products, two platforms, or at tax time.

Everything in the profit report, plus:

  • Up to 50 products, each with its guardrails
  • Scenarios for your biggest price change: sales down, flat or up
  • A tax-season fee summary by category for your accountant, estimated from your numbers (not tax advice)
  • A spreadsheet (CSV) of every number
  • Your Amazon sales side by side with your Etsy shop or Shopify store
  • A day-30 re-check, compared like for like
  • Page + PDF + spreadsheet
Start with your free check-up
  • Both cost less than the $1,658 a month this shop's PPC loss costs (an estimate). $19.99 is about the PPC loss on 12 of its units.
  • 14-day any-reason refund. 14 days to change your mind, no reason needed.
  • Start with the profit report and upgrade to the full audit for $10 within 14 days.
  • Until the statement reader ships, both run on the numbers you type.

Check your own shop for free