Last verified: 2026-09-18 · Locked hub formulas only · embeds CTA-free · Soft MAXED · planning only
One pack for journalists, researchers, and tool builders: paste-ready citations, CTA-free iframe embeds, and a machine publisher-kit.json manifest that lists live Researchy assets (methodology · fee-index · /fees/{platform}.json · fee-changes · embeds).
/seller-fees/publisher-kit.json — ≥10 live assets · cite blocks · embed snippets. Fail condition = marketing-only with no machine manifest (this page is not that)./fees/*.json only. Soft MAXED elsewhere; no new soft CTAs here.Fetch JSON for asset paths, KEEP locks, cite strings, and embed snippets:
https://realratecalc.com/seller-fees/publisher-kit.json
RealRateCalc seller fee methodology (source policy, first-paint KEEP, ads leftovers OFF-default): https://realratecalc.com/seller-fees/methodology/ — planning only; confirm on linked official docs.
Same-input KEEP table (locked hub formulas): https://realratecalc.com/seller-fees/fee-index/ — verified 2026-09-18; planning only.
Machine fee-index: https://realratecalc.com/seller-fees/fee-index/fee-index.json
Etsy KEEP $90.05 on $100 (listing $0.20 + 6.5% + Payments 3%+$0.25, ads OFF): https://realratecalc.com/fees/etsy.json — via RealRateCalc; planning only.
eBay KEEP $86.00 on $100 (most categories 13.6%+$0.40): https://realratecalc.com/fees/ebay.json — via RealRateCalc; planning only.
Per-platform fee feeds: https://realratecalc.com/fees/ (JSON+CSV; official source URLs + keep_on_100).
Dated fee-change changelog (hub official sources only): https://realratecalc.com/fee-changes/
RealRateCalc Researchy publisher kit (cite + embed): https://realratecalc.com/seller-fees/publisher-kit/ — manifest: https://realratecalc.com/seller-fees/publisher-kit.json
Same snippets as /seller-fees/embed/. Frame-allowed src only. Zero Impact inside embeds.
<iframe src="https://realratecalc.com/seller-fees/embed/compare/" title="Seller fee KEEP ranker lite via realratecalc.com" width="100%" height="420" style="border:0;max-width:560px;border-radius:12px;overflow:hidden" loading="lazy" referrerpolicy="no-referrer-when-downgrade"> </iframe> <!-- Attribution is already inside the iframe footer: “KEEP fees via realratecalc.com” -->
<iframe src="https://realratecalc.com/seller-fees/embed/etsy-keep/" title="Etsy KEEP via realratecalc.com" width="100%" height="300" style="border:0;max-width:560px;border-radius:12px;overflow:hidden" loading="lazy" referrerpolicy="no-referrer-when-downgrade"> </iframe> <!-- Attribution is already inside the iframe footer: “KEEP fees via realratecalc.com” -->
<iframe src="https://realratecalc.com/seller-fees/embed/ebay-keep/" title="eBay KEEP via realratecalc.com" width="100%" height="300" style="border:0;max-width:560px;border-radius:12px;overflow:hidden" loading="lazy" referrerpolicy="no-referrer-when-downgrade"> </iframe> <!-- Attribution is already inside the iframe footer: “KEEP fees via realratecalc.com” -->
<iframe src="https://realratecalc.com/seller-fees/embed/depop-keep/" title="Depop KEEP via realratecalc.com" width="100%" height="300" style="border:0;max-width:560px;border-radius:12px;overflow:hidden" loading="lazy" referrerpolicy="no-referrer-when-downgrade"> </iframe> <!-- Attribution is already inside the iframe footer: “KEEP fees via realratecalc.com” -->
<iframe src="https://realratecalc.com/seller-fees/embed/mercari-keep/" title="Mercari KEEP via realratecalc.com" width="100%" height="300" style="border:0;max-width:560px;border-radius:12px;overflow:hidden" loading="lazy" referrerpolicy="no-referrer-when-downgrade"> </iframe> <!-- Attribution is already inside the iframe footer: “KEEP fees via realratecalc.com” -->
Locked $100 KEEP (from fee-index / /fees — no invented fees): Shopify $96.80 · Depop $96.25 · GOAT $90.50 · Etsy $90.05 · Mercari/FB $90.00 · StockX $88.00 · eBay $86.00 · Poshmark $80.00.
| Asset | Path | Role |
|---|---|---|
| Methodology | /seller-fees/methodology/ | policy |
| Fee index | /seller-fees/fee-index/ | table |
| Fee index JSON | …/fee-index.json | data |
| Fees index | /fees/ | index |
| Platform JSON ×13 | /fees/{platform}.json | platform-feed |
| Fee changes | /fee-changes/ | changelog |
| Fee changes JSON | …/fee-changes.json | data |
| Embed docs | /seller-fees/embed/ | embed-docs |
| Embed surfaces ×5 | /seller-fees/embed/… | embed |
| Compare ranker | /seller-fees/compare/ | tool |
| This kit + JSON | publisher-kit.json | kit/manifest |
Reports: live report + snapshot JSON are linked in the manifest. Kids/Higgsfield/YouTube PARKED.
Research & discovery
Trace the locked fee math, dated changes, and live comparisons before you cite or compare.
A cite + embed pack for RealRateCalc seller-fee research surfaces: methodology, fee-index, /fees/{platform}.json, fee-changes, and CTA-free KEEP iframes. Machine manifest at publisher-kit.json lists live assets.
No. Embed surfaces are CTA-free (zero Shopify Impact / soft CTAs). Attribution “KEEP fees via realratecalc.com” stays visible in every embed footer.
Only locked official starting formulas from each KEEP hub (#out first-paint on $100), mirrored on fee-index and /fees/{platform}.json. No invented fees. See methodology.