Business & Finance
Seller Sum
Last updated 2026-07-08 · benchmark measured 2026-08-10 — deterministic & reproducible
Free fee and profit calculators for online sellers across major marketplaces.
Is Seller Sum production-ready?
Legit.Show scores Seller Sum 83 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on Seller Sum (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Accessibility; its weakest is Privacy. Every frame it averages is published with its evidence on the Legit.Show listing.
The 7 Frames
- Performance — 90/100
- Accessibility — 100/100
- Security — 80/100
- Privacy — 45/100
- Reliability — 100/100
- Standards — 89/100
- Discoverability — 75/100
What we measured
- Security headers present: HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy.
- No Content-Security-Policy.
- Served over HTTPS with a valid certificate.
- Real Lighthouse performance run — 831 ms to first byte.
- Returns a proper 404 for unknown routes.
- 3 of 3 sampled routes reachable.
- Has a reachable privacy policy.
- Sets cookies / loads scripts with no consent prompt.
Who it's for
eBay sellers · Etsy sellers · PayPal users · E-commerce entrepreneurs · Resale app sellers
Pricing
Free
Visit Seller Sum → · Alternatives to Seller Sum → · How this was measured →