Know your net.
Fees, postage and platform rules change every month. We track every change from the official source and show what it does to your take-home on a $10, $25 and $50 sale.
Get the weekly Index
What changed in fees, postage and rules this week, and what it costs you on a $10, $25 and $50 sale. Free, one email every Thursday.
- The weekly Index: one email every Thursday: what changed, what it costs you, what to do.
- The change tracker: every 2026 fee, postage, policy and tax change, dated and linked to its source.
- Free calculators: net payout on 7 platforms, Media Mail vs Ground Advantage, and a minimum-price builder.
Rates verified on
What it costs to sell a $25 item
Run your own item →The Reseller Cost Index, October 2026. Platform fees only, US seller, no shipping charged, no sales tax. Cheapest first.
| Platform | Fees | % of sale | You keep |
|---|---|---|---|
| Depop | $1.28 | 5.1% | $23.72 |
| Mercari | $2.50 | 10% | $22.50 |
| Etsy | $2.83 | 11.3% | $22.17 |
| Whatnot (standard tier) | $3.03 | 12.1% | $21.97 |
| eBay (most categories) | $3.80 | 15.2% | $21.20 |
| eBay (books, movies, music) | $4.23 | 16.9% | $20.77 |
| Poshmark | $5.00 | 20% | $20.00 |
| Amazon (media, you ship) | $5.55 | 22.2% | $19.45 |
Latest changes
All changes →-
eBay raises its seller currency conversion charge to 3.25%
For US-registered sellers, the charge eBay keeps when it converts your funds for an item listed or sold on another eBay site rises from 3% to 3.25%. Ordinary US-dollar sales on ebay.com are not affected.
Your net on a $10 / $25 / $50 sale: -$0.03 / -$0.06 / -$0.13
Only on sales eBay converts from another currency: 0.25% more of the converted amount.
Source: eBay: Selling fees · verified
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USPS holiday prices: Ground Advantage up $0.40 to $0.75 on 0-3 lb parcels
Temporary prices on Priority Mail Express, Priority Mail, Ground Advantage and Parcel Select until 12 a.m. CT on Jan 17, 2027. A 0-3 lb Ground Advantage parcel costs $0.40 more at commercial prices in Zones 1-4 ($0.55 in Zones 5-9) and $0.50 more at retail ($0.75). Heavier parcels rise more, up to $7.70. Media Mail and First-Class Mail are not affected.
Your net on a $10 / $25 / $50 sale: -$0.40 / -$0.40 / -$0.40
If you pay for a 0-3 lb commercial Ground Advantage label, Zones 1-4. Same at any sale price. Retail: -$0.50; Zones 5-9: -$0.55 commercial, -$0.75 retail.
Source: USPS newsroom, Aug 25, 2026 · verified
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Whatnot moves to volume tiers: commission falls as four-week sales grow
US sellers' commission now depends on total sales in each four-week period. The standard tier ($0-14,999) is still 8% (4% for coins). Tier 1 starts at $15,000; the top published tier ($500,000+) pays 3.5% (coins) to 6.5% (sports, TCG). Payment processing of 2.9% + $0.30 still applies.
Your net on a $10 / $25 / $50 sale: $0.00 / $0.00 / $0.00
Standard tier: no change. A Tier 1 fashion seller (7%) keeps $0.10, $0.25 and $0.50 more.
Source: Whatnot help: Seller fees · verified
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Whatnot makes Ground Advantage the default: $7.75 for 1-5 lb
Whatnot's negotiated USPS Ground Advantage rate is $7.75 ($6.85 + fees) for 1-5 lb packages. Under 1 lb is priced by weight only: $4.47 under 4 oz, $4.85 under 8 oz, $5.25 under 12 oz, $6.75 under 16 oz. Flat Rate stays available at a temporary $12.99 through Nov 1, 2026.
Your net on a $10 / $25 / $50 sale: n/a / n/a / n/a
Buyers usually pay Whatnot shipping, so your net doesn't change directly. Watch Nov 1, 2026, when the temporary Flat Rate price ends.
Source: Whatnot help: USPS shipping updates · verified
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Media Mail got cheaper: 1 lb is now $4.39 (was $4.47)
In the July 12, 2026 price change, Media Mail went down at every weight checked: 1 lb $4.47 to $4.39, 2 lb $5.22 to $5.13, 5 lb $7.47 to $7.34, 10 lb $11.22 to $11.02. Retail and commercial Media Mail prices are the same, and USPS Tracking is included.
Your net on a $10 / $25 / $50 sale: +$0.08 / +$0.08 / +$0.08
If you pay for a 1 lb Media Mail label. 2 lb: +$0.09; 5 lb: +$0.13; 10 lb: +$0.20.
Source: USPS Notice 123 (Jul 12, 2026) vs (Jan 18, 2026) · verified
Calculators
Where do I net the most?
One item, every platform, ranked by profit.
Postage by weight
Media Mail vs Ground Advantage, current USPS prices.
Minimum-price builder
The lowest price that still clears your profit target.
eBay fees
13.6% of the total (15.3% for books, movies and music) + $0.30 or $0.40 per order
Mercari fees
10% of item price + buyer-paid shipping; no payment processing fee
Poshmark fees
$2.95 flat under $15; 20% at $15 and up
Depop fees
No selling fee for US sellers; 3.3% + $0.45 payment processing
Whatnot fees
8% commission on the item (standard tier) + 2.9% + $0.30 processing
Etsy fees
$0.20 listing + 6.5% transaction + 3% + $0.25 processing
Amazon (media, you ship) fees
15% referral on item + shipping, plus a $1.80 closing fee per media item
How we work
Every number on this site comes from the platform's or carrier's own public page, with the date we checked it. The research and first drafts are AI-assisted; a full-time reseller checks and edits everything before it goes out. If we get something wrong, it goes in the public corrections log.
One email a week. Every number sourced.
What changed in fees, postage and rules this week, and what it costs you on a $10, $25 and $50 sale. Free, one email every Thursday.