Every marketplace publishes a calculator for its own fees, and on its own fees each one is the authority. None of them can tell you where to list, because none of them has a figure for what the other channels would have paid. That comparison is the job of this page — free, in your browser, before the item is listed anywhere.
A marketplace’s own calculator answers one question completely: what will selling this item here cost me? It is maintained by the company that sets the fees, it reflects the schedule currently published, and it usually knows the category-specific rates and the account-level details — a store subscription tier, a promotion — that a third party cannot see. On its own channel it should be treated as the authority, and this page does not compete with it.
What it cannot do is rank. It has no figure for what a different channel would have paid, and no reason to produce one. So a seller holding one unlisted item opens three calculators, writes three numbers down, and compares them — and that reconciliation step, not the fee arithmetic inside any of the three, is where the answer goes wrong.
| What you want to know | Where to answer it |
|---|---|
| I have decided to list on this one marketplace. Exactly what will its fees be on my account, in my category? | That marketplace’s own calculator — it is the authority on its own schedule, and this page is not. |
| I am holding one item and have not listed it anywhere. Which channel leaves me the most? | This tool — type the item once and every channel is ranked side by side on the same fee base. |
| Channel A pays more per sale but Channel B sells in half the time. Which should get the listing? | This tool — it ranks on profit per day of wait and on what a listing is worth per month of shelf, not only on profit per sale. |
| Is a channel with a flat monthly plan worth it at the volume I actually do? | This tool — it spreads a monthly cost over the orders you expect, so the plan stops looking like a per-sale fee. |
| Do returns change the ranking? | This tool — it models per-channel return rate, who pays return postage, how much fee comes back, and how often the item is resellable. |
| What price would this channel need to match the best one? | This tool — it prints the matching price and the break-even price per channel. |
| Do I need an account, a subscription, or a sign-in? | This tool: none of the three. It is a static page and the arithmetic runs in your browser. |
These are the reasons a page like this exists at all. Each one is a difference between channels that a single-channel calculator has no occasion to mention, because within its own channel it is a constant.
Marketplaces bundle their fees differently. On some, the selling commission already covers payment processing, so the single percentage you see is the whole story. On others, processing is billed separately as its own percentage plus a fixed amount per order, and a third charge applies per listing whether or not the item ever sells. Subtracting one headline rate from another therefore compares two quantities that do not contain the same things, and the gap it reports is not the gap in what you keep. This page puts every channel through one model — commission, processing, per-listing and monthly costs as separate inputs — so what is compared at the end is net, not headline.
A flat monthly subscription does not change with the sale, so it cannot be expressed as a percentage of one order without knowing how many orders the month will hold. At one sale a month it is the largest cost on the item; at fifty it rounds to nothing. A per-item calculator has no volume to spread it over and either omits it or attributes the whole month to the one item on screen. This page asks for expected monthly volume and amortises the plan across it, which is the only way that cost is comparable to a percentage on a rival channel.
Channels differ in how often items come back, who ends up paying the return postage, how much of the original fee is refunded to the seller, and how often a returned item can be sold again rather than written down. Those four together decide what you expect to keep, which can rank channels differently from what you are paid on a sale that sticks. A single-channel calculator has no cross-channel comparison to make, so it reports the clean sale. This page reports both, and the ranking after returns is the one it leads with.
The channel that pays most per sale is not always the channel to list on. If it takes twice as long to sell, the same cash and the same item are tied up twice as long, and a slower channel may also renew the listing — and charge for it again — before the item moves. For a seller with finite stock and finite cash the question is closer to return per month of shelf than profit per sale. No marketplace’s own calculator models this, because the alternative use of the shelf is always another marketplace. This page ranks on it explicitly, and says so when the two rankings disagree.
The sell-through and days-to-sell figures it starts with are illustrative defaults, not measurements of how fast any marketplace sells. Replace them with your own sold-listing history before trusting the shelf-time ranking — that is the input it is most sensitive to.
The honest half of the comparison. On the question they are built for, they beat this page, and a seller who uses only this one is missing things:
So the sequence that gets the most out of both is: rank the channels here while the item is still unlisted, then confirm on the winning channel’s own calculator with your own account’s rates before you set the price. This page makes no claim about any marketplace calculator’s accuracy or current terms, and does not evaluate one — it describes only the shape of what each kind of tool is for.
No account and no sign-in: this is a static page, the arithmetic runs in your browser, and once it has loaded it keeps working with the connection off. Nothing you type is uploaded.
Because each one is scoped to a single marketplace, and the question you are actually asking spans several. A marketplace calculator answers "what will selling this here cost me" accurately and from its own published schedule. It cannot answer "should I sell it here", because it has no figure for what any other channel would have paid, and no reason to produce one. To turn three correct single-channel answers into a ranking you have to reconcile them yourself, and that reconciliation — not the fee arithmetic — is where the mistakes happen.
Four things, and each one is easy to miss. The fee bases differ: one marketplace's commission already includes payment processing while another bills processing separately, so the headline percentages are not the same kind of number and cannot be subtracted from each other. Fixed monthly costs are not per-sale costs, so a subscription only makes sense spread over the orders you actually expect that month. Returns are not symmetrical — channels differ in how often items come back, who pays the return postage, how much of the fee is refunded, and whether the item can be sold again. And a listing occupies shelf time: a channel that pays more per sale but takes twice as long to sell it can be the worse place to put finite cash.
No, and on its own fees a marketplace's calculator should be treated as the authority. It is maintained by the company that sets the fees, it reflects the current published schedule, it knows category-specific rates, and it can account for whatever your own account is actually charged — a store subscription tier, a promotion, a category exception. This page's rates are editable defaults that were current when it was written, and they are inputs rather than a fee schedule. What this page adds is not precision on one channel; it is one consistent comparison across all of them.
That is the honest recommendation. Use this page first, while the item is unlisted, to see which one or two channels are worth the effort at all and to catch the cases where the ranking is not what you assumed. Then check the winning channel's own calculator, with your own account's rates, before you price the listing. The two are sequential rather than competing: a ranking across channels, then a confirmation on the one you picked.
No. This site is not affiliated with, endorsed by, or sponsored by any marketplace named on it. Those names are used only to say which channels the comparison covers and to describe the publicly documented shape of each one's fees. No marketplace's calculator is reproduced, quoted, or evaluated here.
Open the where to sell calculator to rank your own item, read a worked example of margin vs. turnover for the case where the two rankings disagree, or see how returns can flip the answer.
Fee rates change. The defaults in the comparison tool were current when it was written and are inputs, not a fee schedule. Confirm against your own statement, or the marketplace’s own calculator, before pricing a catalogue against them.
No warranty. This tool is provided free and as-is, without warranty of any kind, express or implied. It is not tax, financial, or business advice, and it does not replace a qualified professional. You are responsible for reviewing and verifying its output before relying on it, and for meeting any obligation it helps you prepare for. To the maximum extent permitted by law, the authors accept no liability for any loss or damage arising from its use.
Best-effort hosting, no SLA. These tools are free, experimental, and may be slow, broken, moved, or taken offline without notice. We do not promise uptime, backups of anything you type, or that a URL will keep working. Do not use this as a system of record.
Local-only privacy: nothing you type is uploaded. This page is static and makes no live comparison against any marketplace calculator — it describes publicly documented fee shapes. License
Free and open source. If it helped you pick the right channel for an item, the code is under an MIT licence — support is entirely optional and never changes what the tool does.