About EcomFees
An independent, one-person project that turns published marketplace fee schedules into calculators you can actually plan with.
EcomFees exists to answer one deceptively hard question every online seller has: after all the fees, what do I actually make? Marketplace fee schedules are scattered across referral percentages, fulfilment tiers, payment processing, per-order charges, regional VAT and category exceptions. It is easy to price a product, sell it, and discover the margin was thinner than you thought.
Why a calculator instead of a table
Headline percentages hide most of what a sale actually costs. Here is the same $25 sale with free shipping, priced through each marketplace’s published US schedule — the same figures our calculators run on:
| Marketplace | Fees on $25 | Effective rate | Made up of |
|---|---|---|---|
| Amazon (FBA, clothing) | $8.21 | 32.8% | 17% referral ($4.25) + $3.96 small-standard FBA fulfilment |
| eBay (most categories) | $3.80 | 15.2% | 13.6% final value fee ($3.40) + $0.40 per-order fee |
| Etsy | $2.83 | 11.3% | $0.20 listing + 6.5% transaction ($1.63) + 3% + $0.25 payment ($1.00) |
| Shopify (Basic) | $1.03 | 4.1% | 2.9% + $0.30 card processing — plus $39/month whether you sell 1 item or 500 |
None of those four numbers is the marketplace’s advertised rate. Amazon’s “15% referral fee” is 17% on clothing over $20 and does not include fulfilment. eBay’s per-order fee is invisible in a percentage. Etsy stacks three separate charges. Shopify looks cheapest per sale because its real cost is a monthly plan — at 20 orders a month, that $39 adds another $1.95 to every sale, which is the sort of thing a flat comparison table never tells you. That gap is the entire reason this site exists.
The calculators also reproduce band edges exactly, because they cost real money: on Amazon US clothing, a $19.99 sticker pays 10% and a $20.01 sticker pays 17% on the whole price — two cents more on the price leaves you $1.38 worse off. Details of how bands, minimums and per-order fees are modelled are on the methodology page.
What we cover
6 marketplaces across 3 regions, each with a calculator, a plain-language fee reference page, and head-to-head comparisons. This table is generated from the data files the calculators use, so it cannot drift from what the site actually ships.
| Marketplace | Regions | Data last reviewed |
|---|---|---|
| Amazon | US, UK, DE | June 27, 2026 |
| eBay | US, UK, DE | June 27, 2026 |
| Etsy | US, UK, DE | June 27, 2026 |
| Shopify | US, UK, DE | June 27, 2026 |
| Walmart | US | July 2, 2026 |
| TikTok Shop | US | July 2, 2026 |
“Data last reviewed” is the oldest review date in that marketplace’s regions — the worst case, not the flattering one. German-language versions of the main calculators are at ecomfees.com/de.
Who runs it
EcomFees is run by one person: an independent developer, working from South Korea, who builds and maintains the site alone. There is no company behind it, no editorial team, and no marketplace relationship of any kind — we are not affiliated with, endorsed by, or paid by Amazon, eBay, Etsy, Shopify, Walmart or TikTok Shop.
That means the honest version of our expertise is this: we are not claiming to be your accountant. What we are good at is reading published fee schedules carefully, modelling them precisely, and being explicit about the edges. Every figure on the site is traceable to a primary source, and every limitation we know about is written down rather than glossed over.
The site is a static site with no accounts and no logins. Calculator inputs are processed in your browser and never sent to us — see thePrivacy Policy for what the hosting layer does record.
How the numbers are kept current
Fee data comes from primary sources only: each marketplace’s own pricing page, rate card or seller help-centre schedule. We do not copy figures from blog posts or competitor calculators, because those go stale silently. Each dataset is a validated file in the site’s source — a malformed or missing rate fails the build rather than shipping a silent zero.
On a regular cadence we take the next marketplace in a rotation, open its official source and compare the headline rates line by line. If they match, we record that nothing changed. If they differ, we correct the data file and the fix flows to every calculator, fee page and comparison at once. If the source is gated or unreachable, we record that we could not verify and leave the figures alone — we never refresh a review date we did not actually earn, and never change a rate on the strength of a secondary source. The most recent review across all datasets was July 2, 2026.
How the site is funded
EcomFees is free and is supported by advertising, and may include affiliate links to seller tools. Two rules hold regardless:
- Fee figures are never influenced by money. They come from published rates and change only when the marketplace changes them.
- No paid placement. No marketplace, tool or brand can buy a ranking, a recommendation, or a better-looking comparison. Where a link earns a commission, it is labelled.
See the Privacy Policy andTerms & Disclaimer for the full detail.
What EcomFees is not
- Not an official marketplace tool, and not a quote — your seller account is always the authority on what you were actually charged.
- Not tax, accounting or legal advice. Sales tax, VAT registration and income tax depend on your circumstances.
- Not a full cost model. Advertising spend, refunds, storage, returns processing and negotiated rates are deliberately excluded andlisted as limitations.
Corrections and contact
If a figure here disagrees with what your seller account charges you, the seller account is right and we want to know. Email[email protected] with the marketplace, region and ideally a link to the official page showing the current rate; we check it against the primary source and correct the data file. The same address is the place to request a marketplace or country we don’t cover yet — see the contact page. Being a one-person project, replies can take a few days, but corrections get handled first.
Most recent data review: July 2, 2026