This is a used-locker checkout — the hockey stick, the ski boots, the lacrosse head — not a closet SKU and not a consignment bag. SidelineSwap Help prints a seller fee on the price of the item when it sells: 12% on your first five sales, 10% from sale six on, with a $1.99 minimum and a $100 maximum. Then a payment-processing cut of 2.9% of the item + $0.30. You type both rates. Keep = sale − SidelineSwap commission you type − payment you type. Listing the pads is free. The percent only fires when they sell. Buyer pays shipping and tax on the default path — those dollars are not in the fee. That stack is not Depop’s closet 10% + processing on a fashion SKU (different marketplace, not a vs-clone), and not Etsy’s $0.20 listing + 6.5% + country processing.
Official formula: keep = sale − SidelineSwap commission you type − payment you type, where sale is the item (Help: fee is based on the price of the item; shipping and tax are not in that base on the default path). Seller fee is clamped to the published $1.99 min / $100 max. Default is an $80 used hockey stick at the official 12% new-seller row, payment 2.9% + $0.30, bump empty. Change any field.
Sale for the percent = the item you typed. Shipping the buyer paid is not in this base (official reminder). Bump, if you type it, is a third official percent on the item — empty on the default keep. Help does not print a Sideline Pro dollar or a 50-state tax table.
Keep $67.78 from an $80 sports-gear sale
12% × $80.00 = $9.60. Payment 2.9% + $0.30 = $2.62. Planning only — not a dashboard screenshot.
Listing items on SidelineSwap is free, but charge Sellers a fee once it's sold based on the price of the item.
0 – 5 sales: 12%. 6+ sales: 10%.
— What are the Fees?, SidelineSwap Help, fetched 28 Aug 2026, HTTP 200 (no last-updated stamp in the HTML)
That table is the whole SidelineSwap selling machine for the commission line. There is no insertion fee. There is no category ladder (hockey vs ski vs lacrosse pays the same percent). There is a tenure ladder: the first five sold items sit at 12%; sale six and after sit at 10%. This card will not guess which sale number you are on. Default is the published first row — 12% — because that is what a new locker pays. Type 10 when you have six sales.
“Based on the price of the item” is the sports-gear trap in reverse. A closet app that skims postage will eat the box. SidelineSwap Help says the opposite on the default path: the buyer pays shipping, the buyer pays sales tax, and neither factors into a seller’s fees. An $80 stick with a $12 buyer-paid label is an $80 sale for the 12%, not $92. Do not paste a postage-in-the-percent rule onto this locker.
Posting is free. The 12% (then 10%) is a sold-item tax, not a shop rent. That is the opposite of Etsy’s $0.20 listing fee whether it sells or not. A craft shop and a used-gear locker are different machines. This page will not mill a vs-clone of them.
Sports-gear order: $80 used hockey stick. Official new-seller 12%. Official processing 2.9% + $0.30. Bump not typed. Shipping the buyer paid is not in this base.
Help does not publish this $80 keep. The 12%, the 2.9% + $0.30, the item-only base, and the $1.99 / $100 clamps are official; the subtraction is ours. Source: What are the Fees?. Same stick after sale six, 10% typed: $80 − $8.00 − $2.62 = $69.38.
| Locker sale (item) | 12% raw | Published clamp | 2.9% + $0.30 | Keep |
|---|---|---|---|---|
| $10 used shin guards | $1.20 | $1.99 minimum | $0.59 | $7.42 |
| $16.58 (12% equals the floor) | $1.99 | $1.99 (band starts) | $0.78 | $13.81 |
| $80 stick (default) | $9.60 | $9.60 (in band) | $2.62 | $67.78 |
| $833.33 (12% equals the cap) | $100.00 | $100.00 (cap starts) | $24.47 | $708.86 |
| $1,000 ski setup | $120.00 | $100.00 maximum | $29.30 | $870.70 |
$100 ÷ 0.12 = $833.33 is where the USD cap overtakes 12%. A $1,000 race-ski package is not a 12% story all the way up — SidelineSwap stops at $100 on the seller-fee line. The $1.99 floor overtakes 12% below about $16.58 ($1.99 ÷ 0.12). At 10% the cap starts at a $1,000 item ($100 ÷ 0.10) and the floor at about $19.90. Help does not say what happens if the $1.99 minimum exceeds a tiny sale; this card will not invent a negative-keep rule. Processing is not named inside that min/max — only “Seller Fee.” We clamp the commission line, not the 2.9% + $0.30.
In addition to the Seller fee outlined above, SidelineSwap collects a payment processing fee which is paid out to our payment processor. The payment processing fee is 2.9% the cost of the item + $0.30.
— What are the Fees?, fetched 28 Aug 2026, HTTP 200
That sentence is why this card’s payment fields start at 2.9 and 0.30, not empty. The fees article printed those numbers. You still type them — paste a different pair if the dashboard disagrees.
A conflict we will not paper over: SidelineSwap’s public How it Works page says new sellers pay “a 12% SidelineSwap fee (plus a 3% payment processing fee).” That is a round 3%, no $0.30. The dedicated fees article is the numbered source this card uses. Type 3 and clear the flat if that is what actually hit. We will not average 2.9 and 3 into a fake blend.
Help also says payment processing and payouts are what you get for the fee, and that payouts are free on that fees article. A separate cash-out article names Canadian FX and SWIFT dollars. Those are not in the HTML we used for this keep. Empty extra = $0. Do not invent 2% on a CAD cash-out here.
Items that sell within a week of being bumped will incur a 3% fee. If the item sells more than seven days after its last bump, the additional 3% fee will not apply. This 3% fee also does not apply to items sold within seven days of being auto-bumped.
— same What are the Fees? article
The default $80 keep leaves bump empty. That is a listing that was not manually bumped, or that sold more than seven days later, or that was auto-bumped. If you did bump and it sold inside a week, type 3 in the bump field. On the $80 stick that is an extra $2.40, and keep falls to $65.38 ($80 − $9.60 − $2.62 − $2.40). Help does not put the $1.99 / $100 clamp on the bump line. We will not invent that clamp. Auto-bumps (Sideline Pro) are exempt from the 3% — the fees article says so; it does not print the Pro subscription price, so this page will not.
Unless the seller chooses free or discounted shipping when they list their item, the buyer pays for the cost of shipping. The buyer also pays any applicable sales tax. Neither the shipping cost nor sales tax factors into a seller's fees or is deducted from a seller's earnings.
— What are the Fees?
That is why this card has no shipping-in-the-percent field. Baking “free shipping” into a fatter sticker still pays 12% (or 10%) on the whole sticker — you moved the dollars, you did not dodge the fee. If you actually offered a discounted label, Help’s fees article does not print the carrier grid. A later seller-balance article names label cost as a deduction when you used a SidelineSwap-provided label. That dollar is COGS on this card, empty by default. We will not invent $14.80 for a pair of skates.
Official copy already answered the tax question: the buyer pays applicable sales tax, and it is not deducted from seller earnings. Help does not give you Illinois vs California, VAT, GST, or a facilitator table on that article. Empty tax is not modeled. If your dashboard keep is smaller than this card because a tax-on-fee or a label hit, paste the receipt dollar into COGS. Do not ask this page for a 50-state matrix. It will not grow one.
SidelineSwap is a used sports-gear locker with a tenure percent on the item, a $100 seller-fee cap, and buyer-paid shipping out of the fee. That is not:
Same used jacket on Depop is a different fee machine. This page stays on the sports-gear sale.
Gaps we will not paper over: How it Works “3% processing” vs fees-article 2.9% + $0.30 (we default to the fees article; type 3 if that settled); Sideline Pro subscription dollar; prepaid-label grid; Canadian cash-out FX / SWIFT; 50-state sales tax; min-exceeds-sale behavior; in-app cells that are not on Help.
Free to list. 12% of the item on sales 0–5, 10% from sale 6, $1.99 minimum, $100 maximum, plus 2.9% of the item + $0.30 processing. Optional 3% if it sold within a week of a manual bump. Last checked 28 Aug 2026 from SidelineSwap Help. No last-updated stamp in that HTML.
Not on the default path. Official copy: buyer pays shipping and tax; neither is in the seller’s fees. If you offered free shipping, type the label as COGS — Help does not print a carrier table on the fees article.
Fees article: 2.9% of the item + $0.30. You type it. Empty = $0 here. How it Works says 3% processing for new sellers. We will not blend the two. Paste the dashboard line.
Planning, official 12% + 2.9% + $0.30, bump empty: $80 − $9.60 − $2.62 = $67.78. Not a payout screenshot. Type 10 after five sales; type 3 if a bump applied.
When 12% of the item would exceed $100 — at an $833.33 item and above. A $1,000 ski setup pays $100 seller fee, not $120, then still pays 2.9% + $0.30 on the full $1,000. At 10% the cap starts at $1,000.
No. Help says the buyer pays tax and it is not deducted from seller earnings. It does not publish state rates. Empty tax is not modeled.
Open the profit calculator Seller-fee hub Depop fees explained
Fashion on a different marketplace (closet 10%, not a sports-gear tenure cut): Depop seller fees explained.