Free tool for marketplace sellers

What are bad reviews
really costing you?

Fill in four numbers you already know off the top of your head, and instantly see your review risk level — and how much bad reviews are quietly costing you every year.

100% in your browser. No sign-up, no seller-account login, no account connection — nothing you type here ever leaves this page.

Your numbers

Results update as you type. Leave ad spend at 0 if you don't run ads.

Your bad-review risk level
🟡 Moderate

$0
estimated loss per year
Lost conversions (shoppers scared off) $0
Wasted ad spend $0
Lost repeat buyers $0

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* Estimate based on industry-average assumptions — for reference only. See the assumptions

See the assumptions behind the math

Every constant below is an industry rule of thumb, deliberately on the conservative side. Your real numbers will differ — that's why this is an estimate, not a report.

  • Conversion drag by rating — the share of would-be buyers a low rating scares off: below 4.0★ → 15%; 4.0–4.3★ → 8%; 4.3–4.7★ → 4%; 4.7★ and up → 2%.
  • Silent unhappy buyers ×20 — classic TARP research: only ~4–5% of unhappy customers ever complain to the seller. Each public bad review stands for roughly 20 who said nothing and just left.
  • Repeat-purchase loss ×2 — a buyer upset enough to leave a 1–2★ takes about 2× one order's value with them (no re-purchase, plus the people they tell). Conservative.
  • Ad drag ×0.5 — paid traffic suffers the same conversion drop as organic; we count only half of it against your ad budget. Conservative.
  • Recoverable share 35% — the portion of that loss you can realistically win back when unhappy buyers have a way to reach you and you actually answer them.
  • Risk bump — if new 1–2★ reviews exceed 5% of monthly orders, risk is raised straight to High regardless of rating.

All constants live in one config block in this page's source — nothing is hidden.

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