Same $100 · locked hub formulas
eBay keeps $1.00 more on this $100 sale (before COGS / FBA). Official first-paint from /amazon-seller-keep/ and /ebay-keep/.
Own store keeps ~$96.80 on $100 (Basic Payments) vs marketplace take above — Start Shopify (Impact · FTC) · planning only · compare ranker · fee index
I get commissions for purchases made through links in this post. Compensated as a Shopify affiliate.
Official first-paint ONLY — rates locked to /amazon-seller-keep/ (#out $85.00 · Home referral 15% · FBA typed $0) and /ebay-keep/ (#out $86.00). No invented FBA size/weight/fuel tiers. Last verified 2026-09-18.
Last verified: 2026-09-18 · Locked hubs /amazon-seller-keep/ (#out $85.00) · /ebay-keep/ (#out $86.00) · planning only · Fee changes · live ranker
Amazon lock: Home referral 15%, FBA typed $0 → KEEP = sale − 0.15×sale. eBay lock: US most categories (no Store) 13.6% + $0.40 → KEEP = sale − 0.136×sale − 0.40.
Reverse / target KEEP · locked hub formulas
Enter the net you want after fees. We solve the list/sale price each locked formula needs. Same algebra as /seller-fees/break-even/. No invented fees.
Reverse: Amazon sale = KEEP / 0.85 · eBay sale = (KEEP + 0.40) / 0.864. Forward check on $100: Amazon $85.00 · eBay $86.00.
Same sale price. Locked marketplace stacks from the Amazon Seller and eBay KEEP hubs — not a slogan, and not an invented FBA size/weight table. On $100, Amazon first-paint KEEP is $85.00 (Home referral 15%, FBA typed $0); eBay is $86.00 ($1.00 gap to eBay on this sketch).
| Platform | Official starting fee (hub lock) | KEEP on $100 | Hub |
|---|---|---|---|
| Amazon Seller (Home referral) | Home referral 15% · FBA typed $0 | $85.00 | /amazon-seller-keep/ |
| eBay (US most cats, no Store) | 13.6% of total sale + $0.40 per-order | $86.00 | /ebay-keep/ |
Winner on this $100 sketch: eBay by $1.00 vs Amazon Home referral-only (before FBA). Soft Shopify bridge under the card — disclosed Impact affiliate.
Formula on hub: KEEP = sale − 0.15×sale. Sources linked from Amazon Seller KEEP / Amazon fees explained. Other categories and FBA are you-type on the hub — never invented here.
Formula on hub: KEEP = sale − 0.136×sale − 0.40. Sources linked from eBay KEEP / eBay fees explained.
Amazon $85.00 vs eBay $86.00 from locked hub first-paint. eBay keeps $1.00 more on this sketch. Planning only.
Yes — /amazon-seller-keep/ #out $85.00 and /ebay-keep/ #out $86.00. No invented FBA tiers.
No. First-paint is referral-only with FBA typed $0. Paste fulfillment on the Amazon hub; we do not invent size/weight/fuel dollars.
First-paint is the no-Store most-categories row. Store discounts and Promoted Listings are extras — see eBay KEEP.
Not affiliated with Amazon or eBay. Shopify Impact links are disclosed affiliates. Educational planning only.
Keep $96.80 on Shopify — Start Shopify (Impact · FTC) Amazon KEEP hub eBay KEEP hub Full marketplace ranker
Break-even list price Seller fee index Shopify vs Amazon fees Etsy vs eBay fees Etsy vs Amazon fees Mercari vs eBay fees Electronics: Amazon vs eBay Amazon KEEP $85.00 eBay KEEP $86.00 Amazon fee JSON Compare marketplaces