Know which listings deserve your next dollar.
Before ads or inventory.
GrowMargin turns one listing into a decision: what to charge, what to keep, and what to fix before you spend more.
Decision board
Example analysis
What you enter
Price, cost, fees, shipping, ads, and optional returns.
Decision status
Good to scale / Watch closely / Fix first
Price floor
Minimum price to aim for
Keep / Fix
What to change first
Output
Decision status, price floor (minimum price), and PDF or Email Insights on paid plans.
Three things sellers need before they scale.
Should this listing get more money, more ads, or a better price?
The problem
Revenue looks good until fees, shipping, returns, and ads take their cut.
How GrowMargin solves it
One manual analysis with platform presets, live decision status, a price floor (minimum price), and no API friction.
What value the client gets
A calm decision status — and on Basic, the next step plus a shareable memo.
From one number to a decision.
See the verdict first
Use the public demo to see the decision before you create an account.
Sign in when it helps
Google sign-in unlocks saving on Free. PDF export and side-by-side compare unlock on Basic.
Choose a plan once
Pick Basic ($15) or Pro ($29). This is a one-time payment, not a subscription.
Set up your profile (optional)
Add your business name and preferred currency. Both are optional — the workspace works without them. Business name appears on PDF (Basic+); logo on PDF is Pro.
Pick your platform & enter your numbers
Choose a store type or use a custom setup. Fees are pre-loaded. Type your numbers or start from the built-in defaults, then see profit, margin, and a decision status (Good to scale / Watch closely / Fix first) live.
Save analyses & compare scenarios
Save any analysis by name. Model returns and price floors. Come back when fees change, tweak one number, and see the new margin immediately.
Download PDF or email your report
Export a decision-memo PDF (Basic+). On Pro, copy Email Insights or open an Email Insights draft in your email app for suppliers and partners.
Compare analyses to find the price that makes you more money.
Save different versions of the same product — different prices, different costs, different platforms — then compare them side by side. See exactly what changes and what doesn't.
- BasicSide-by-side values + a plain-language story: what changed, what drove it, and more.
- Pro% change per metric + full cost breakdown, efficiency check, and 1–2 action steps with real numbers and more.
Open Email Insights in your app.
Partners still live in their inbox. Pro builds a verdict-first Email Insights report — then you copy it or open it in Gmail, Apple Mail, or Outlook with the draft ready. You choose the recipient; we never send email for you.
- Verdict, net profit, margin, and next step in the body
- Copy Email Insights or open in your email app
- Optional ROAS line when marketing math is on
- Pairs with decision-memo PDF exports (Basic+)
Decision-memo PDFs, not number dumps.
Export a calm PDF with the full verdict write-up, cost stack, what would fix this, price floor, and optional marketing section. Free users see decision status and a short teaser on screen; Basic unlocks the full write-up and PDF.
- Multi-paragraph verdict + practical fix checklist
- True net after returns when you model return rate
- Matching green header & footer, clean text wrap
- Business name & logo when set in profile
One payment. No renewals.
No subscriptions. Pay once — we never charge you again.
Free
See the decision status. Upgrade when you want the fix.
- Access to all analyses for any online store
- Live profit + decision status (Good to scale / Watch closely / Fix first)
- Teaser insight — full fix checklist on Basic
- Returns & price floor numbers (apply + PDF on Basic)
- Quick-start examples to try instantly
- Save 1 analysis · 1 insight card
Basic
Decision memo for this listing — pay once.
- Full reason + next-step fix checklist
- Decision-memo PDF (verdict, costs, what to fix)
- Full details popup for verdict & fix guidance
- All beginner insights unrestricted
- Save up to 10 analyses · compare any 2 side by side
- Currency customisation · business name on PDF
Pro
Scale with ads — ROAS, Email Insights, more saves.
- Everything in Basic
- Email Insights (copyable report you open in your email app)
- Copy Email Insights for partners & suppliers
- Break-even ROAS (return on ad spend) / ACOS (ad cost as a share of sales)
- Compare with % change + which scenario wins
- Save up to 25 analyses · logo on PDF exports