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What it costs to sell and ship small electronics

On a $150 used phone or tablet, eBay takes $20.80, Mercari $15.00, Poshmark $30.00, Whatnot $16.65 and TikTok Shop $9.00, before shipping. A used device with a lithium-ion battery can only go by ground: a boxed phone under 1 lb costs $7.33 to $8.95 by Ground Advantage at USPS commercial prices (Zones 1-8), in a rigid box (not a Priority Mail box) marked “Restricted Electronic Device” and “Surface Transportation Only”, declared as hazardous when you buy the label.

Below: fees at $20, $60, $150 and $400, postage, Publication 52's watt-hour and battery-count limits, for-parts devices and loose batteries, and what an undeclared package costs on each platform.

Rates verified on

USPS and platform rules checked , except Whatnot, whose fees and rules are shown as its help page read on (§)

USPS Media Mail for small electronics
Not allowed
eBay fee on a $60 sale, no shipping charged
$8.56
a phone or handheld, boxed, 1 lb, Ground Advantage to Zone 4 (USPS commercial)
$8.55
USPS fee for undeclared hazmat on a commercial label
$50.00

Selling fees on a $20, $60, $150 and $400 device

What each platform takes and what's left of the sale price, computed with the same code as our fee calculators. Fee pages checked Oct 14, 2026.

What you keep before shipping costs: sale price minus platform fees, no shipping charged, no sales tax. In brackets: the fees. § Whatnot: rates from its own fee page as checked Oct 14, 2026, not re-checked since (see the note below the tables).
Platform $20$60$150$400
eBay13.6% of the total + $0.30/$0.40 per order $16.88 ($3.12)$51.44 ($8.56)$129.20 ($20.80)$345.20 ($54.80)
Mercari10% of item + shipping $18.00 ($2.00)$54.00 ($6.00)$135.00 ($15.00)$360.00 ($40.00)
Poshmark$2.95 under $15; 20% from $15 $16.00 ($4.00)$48.00 ($12.00)$120.00 ($30.00)$320.00 ($80.00)
Whatnot§8% + 2.9% + $0.30 $17.52 ($2.48)$53.16 ($6.84)$133.35 ($16.65)$356.10 ($43.90)
TikTok Shop6% of item + shipping $18.80 ($1.20)$56.40 ($3.60)$141.00 ($9.00)$376.00 ($24.00)

If the buyer pays $8.55 shipping

Here the buyer pays the commercial Ground Advantage price for 1 lb to Zone 4 and all of it goes on the label. eBay, Mercari, Etsy, Amazon and TikTok Shop take their percentage from buyer-paid shipping too, and Whatnot's and Depop's processing fees cover it; Poshmark buyers pay Poshmark's own label instead.

What you keep with buyer-paid shipping of $8.55 spent on the label. In brackets: the platform's extra fee because of the shipping charge, and for Poshmark any label upgrade you pay. One USPS price is used for every platform so the fees compare like for like. No sales tax.
Platform $20$60$150$400
eBay $15.72 ($1.16)$50.28 ($1.16)$128.04 ($1.16)$344.04 ($1.16)
Mercari $17.14 ($0.86)$53.14 ($0.86)$134.14 ($0.86)$359.14 ($0.86)
Poshmark $16.00 ($0.00)$48.00 ($0.00)$120.00 ($0.00)$320.00 ($0.00)
Whatnot§ $17.27 ($0.25)$52.91 ($0.25)$133.10 ($0.25)$355.85 ($0.25)
TikTok Shop $18.29 ($0.51)$55.89 ($0.51)$140.49 ($0.51)$375.49 ($0.51)
  • $20: with buyer-paid shipping, TikTok Shop leaves $18.29 and eBay $15.72, a gap of $2.57.
  • $60: with buyer-paid shipping, TikTok Shop leaves $55.89 and Poshmark $48.00, a gap of $7.89.
  • $150: with buyer-paid shipping, TikTok Shop leaves $140.49 and Poshmark $120.00, a gap of $20.49.
  • $400: with buyer-paid shipping, TikTok Shop leaves $375.49 and Poshmark $320.00, a gap of $55.49.
  • eBay: Phones and consumer electronics aren't on eBay's list of categories with their own rate (eBay fee page).
  • Poshmark: Posh Authenticate excludes Electronics (Poshmark).
  • TikTok Shop: TikTok Shop lists its Phones & Electronics subcategories at 6% and Pre-Owned Refurbished Phones & Electronics at 5% (TikTok Shop Academy). The table uses 6%.
  • Amazon isn't in the table: this site tracks Amazon's media fees only. Amazon's pricing page lists Consumer Electronics at 8% with a $0.30 minimum (Amazon, saved copy Oct 14, 2026), and “A product's fee category may not be the same as the category that appears to customers in the Amazon store”. Whether a used device can be listed there depends on Amazon's own condition and category rules, which this page doesn't cover.
  • eBay's rate for each category it lists separately, with worked examples: eBay fees by category.
  • eBay also charges its percentage on sales tax, which the tables leave out: eBay fees on sales tax.
  • Whatnot's commission falls at higher four-week sales tiers; the tables use the standard tier, 8% in every category except Coins (Whatnot's fee page as checked Oct 14, 2026).
  • § Whatnot: the rates, and the Whatnot rules quoted on this page, are from the platform's own help pages as checked Oct 14, 2026. Those help centers block automated checks, so we couldn't re-check them for this update; confirm on the platform before you price around them.
  • Your own numbers: where to sell calculator · selling fees compared

Shipping small electronics: USPS prices by weight

Media Mail is limited by what's inside, not by size: “Only these items may be mailed at the Media Mail prices” (DMM 173.4.1). The list is books, 16 mm films, printed music, test materials, sound and video recordings, playscripts and manuscripts, printed educational charts, medical loose-leaf pages and computer-readable media. Anything else pays parcel prices, and “If you try to include anything that's not allowed, you (or your recipient) will have to pay higher postage rates” (USPS). USPS can check: “the mailing of articles at Media Mail or Library Mail prices constitutes consent by the mailer to postal inspection of the contents” (DMM 173.2.2).

That leaves USPS Ground Advantage as the tracked option: packages up to 70 lb, with USPS Tracking and up to $100 of insurance included (USPS).

Electronics aren't on that list, and USPS spells out a few: “Video games, computer drives, and digital drives do not qualify for Media Mail prices” (USPS).

USPS Notice 123 effective Oct 4, 2026. Each weight is "not over". Commercial prices are USPS's published prices for labels bought online; retail is the Post Office counter. Ground Advantage prices include USPS's temporary holiday add-on until Jan 17, 2027; Media Mail has none. Weights are examples: weigh your packed item.
Packed weight Ground Advantage, commercial, Zone 1Ground Advantage, commercial, Zone 4Ground Advantage, commercial, Zone 8 Ground Advantage, retail, Zone 4
8 ozearbuds or a phone, small box $7.33$7.86$8.95 $8.80
1 lba phone or handheld, boxed $8.01$8.55$11.22 $11.10
3 lba tablet, boxed $9.04$10.07$16.30 $14.20
6 lba laptop, boxed $10.52$12.20$21.73 $17.15

Your exact weight and zone: postage calculator · Ground Advantage rates · USPS holiday prices

Platform labels

A label bought through a selling platform follows that platform's price list. These are the label prices on our change tracker for the platforms above, from each platform's own page; each note says when that page was checked if it wasn't re-checked for this update.

  • Whatnot. Since Jul 31, 2026, Whatnot's default label is Ground Advantage: $4.47 under 4 oz, $4.85 under 8 oz, $5.25 under 12 oz, $6.75 under 16 oz, and $7.75 for 1-5 lb at any distance (Whatnot's help page as checked Oct 14, 2026; tracker entry). Over that, Whatnot says “Packages over 5 lbs use zone-based Ground Advantage commercial pricing” (Whatnot, as checked Oct 14, 2026), and it warns: “Using Priority Mail or Flat Rate packaging with Ground Advantage labels may result in returned packages and USPS fees of approximately $20 per package”. Buyers usually pay Whatnot shipping.
  • Mercari. Since Oct 19, 2026, Best-rate Ground Advantage labels cost $7.99 at 1 lb (was $7.48) and $13.99 at 3 lb (was $12.83). Packages over 1 cu ft or longer than 22 in. pay Standard rates: 1 lb goes from $7.59 to $8.99 (tracker entry).
  • Poshmark. Buyers pay for Poshmark's standard label, which covers packages up to 5 lb. Heavier packages need an upgrade that you pay: $5.00 for 5.01-10 lb and $10.00 for 10.01-15 lb. From Oct 26, 2026, Poshmark deducts the upgrade even if you ship on the standard label (Poshmark; tracker entry).
  • eBay Labels and other label services use their own prices; this page uses USPS's published prices so every platform is compared on the same postage.

Insurance and signature on small electronics

“Priority Mail Express, Priority Mail, and USPS Ground Advantage include $100.00 of insurance coverage” (DMM 503, Exhibit 1.4.1); Media Mail isn't on that list and includes none. Beyond that, “additional insurance may be purchased for no more than a maximum coverage of $5,000.00” (DMM 503.4.2), and “Insurance coverage only covers the actual value of mail contents” (USPS). “Insurance fees are based on the item's declared value” (USPS). “An item insured for more than $500.00 receives a delivery scan ... and USPS provides a signature as the delivery record to the mailer electronically” (DMM 503.4.3.1). Under that, Signature Confirmation costs $4.15 online or $5.15 at the counter (Notice 123).

USPS insurance fees for insuring the full sale price, Notice 123 effective Oct 4, 2026 (fee for the coverage amount; $2.80 for up to $50, then by band; $9.05 plus $1.50 per $100 over $600). Registered Mail is a separate service that includes insurance up to $50,000.
Declared value Ground Advantage insurance fee Registered Mail fee Delivery signature
$20 included (up to $100) $21.50 Signature Confirmation, $4.15 online
$60 included (up to $100) $21.50 Signature Confirmation, $4.15 online
$150 $4.50 $25.00 Signature Confirmation, $4.15 online
$400 $6.05 $25.00 Signature Confirmation, $4.15 online
  • Insured for more than $500, the buyer “may be required to show an acceptable primary ID before USPS will deliver the mailpiece” (USPS).
  • With batteries in the box, USPS says “combining multiple extra services (e.g., signature confirmation and insurance less than or equal to $500) is prohibited when mailing hazardous materials” (Publication 52, 323.2).

Batteries: what USPS Publication 52 requires

The limits for a device with its battery installed

Phones, tablets, earbuds and handhelds run on rechargeable lithium-ion batteries. Publication 52 allows them in domestic mail within these limits: “Cells must not exceed a 20 Wh rating” (Publication 52, 349.241); “Batteries must not exceed a 100 Wh rating” (349.241); and, for batteries rated over 2.7 Wh such as a phone's or a laptop's, “Each mailpiece must contain no more than eight cells or two batteries” (Publication 52, 349.242). The rating is on the battery itself: “Each battery must display the "Watt-hour" or "Wh" marking” (Publication 52, 349.241).

Used devices go by ground only

Pub 52 treats a device as used, damaged or defective when it “Is not new in original packaging; Is not manufacturer-certified new or refurbished; and/or Has some form of damage or defect” (349.21(e)), and “Used, damaged, or defective electronic devices are prohibited from air transportation” (Publication 52, 349 (Domestic Lithium Battery Mailability)). USPS's own summary: “if the items are used, they can only be sent via ground transport (can't go on planes)” (USPS). Ground Advantage is the service for that: “also the primary option for HAZMAT items that can't travel by air” (USPS). The package also “must be marked with "Restricted Electronic Device" and "Surface Transportation Only" on the address side of the mailpiece” (Publication 52, 349.221(e)).

Not by Priority Mail, and not in a Priority Mail box

Two Publication 52 rules keep lithium battery packages out of Priority Mail. For a used device: “Mailable hazardous materials that are prohibited from air transportation may not be sent as Priority Mail Express or Priority Mail” (Publication 52, 327.11). For any package with a lithium battery inside, new or used: “USPS-produced Priority Mail Express and Priority Mail packaging supplies may not be used for shipping mailable hazardous materials” (Publication 52, 339.3). Use your own box and a Ground Advantage label.

Packing and declaring

“Mailpieces containing lithium batteries must be packaged in rigid outer packaging unless excepted under 339.4” (Publication 52, 349.221(c)); a padded or poly bag is allowed only inside the device's original box, and only if “The equipment/device must be new, or manufacturer refurbished” (Publication 52, 339.4). A box for a package up to 20 lb “must use outer packaging rated at 200 lb. burst test or 32-edge crush test strength or equivalent, at minimum” (Publication 52, 339.4(a)). “Batteries installed in equipment must be protected from damage and short circuit” (Publication 52, 349.221(f)); “Equipment containing lithium batteries must have effective means of preventing it from being inadvertently turned on or activated” (Publication 52, 349.221(g)); and “Cells, batteries, or equipment containing cells or batteries, must be individually cushioned, creating separation to prevent movement or damage” (Publication 52, 349.221(h)). When you buy the label, Click-N-Ship and platform labels included: “Mailers must identify whether a shipment contains hazardous materials when generating the label” (Publication 52, 323.1).

When the box needs a lithium battery mark

Installed batteries in small numbers don't: “Mailpieces containing button-cell batteries installed in equipment (including circuit boards) or no more than four lithium cells or two lithium batteries installed in the equipment they operate are excepted” (Publication 52, 349.221(d)). A spare battery packed in the box (not installed) does: “Mailpieces must display a DOT-approved lithium battery mark ... indicating UN3481, on the address side” (Publication 52, 349.243). So does a buyer's whole order once it's more than two items: “Packages in consignments of more than two items require DOT-approved lithium battery markings” (Publication 52, 349.221(i)).

Damaged batteries and batteries on their own

For damaged, defective or recalled batteries, Pub 52's mailability table says “Prohibited, unless approved by the director, Product Classification” (Publication 52, 349 (Domestic Lithium Battery Mailability)). A battery sold by itself has its own conditions: “Lithium-ion cells and batteries must be in their sealed packaging” (Publication 52, 349.244); “The mailpiece must not exceed 5 pounds”; and “Mailpieces must be sent by surface transportation only, unless both mailed from, and intended for delivery to, the state of Alaska” (Publication 52, 349.244(d)). The package also needs a DOT lithium battery mark “specifying "UN3480" on the address side” and the words “Surface Mail Only, Lithium-ion Batteries - Forbidden for Transportation Aboard Passenger Aircraft” (349.244). A used loose battery isn't in its sealed packaging, so it doesn't meet the first condition.

If a package isn't declared

  • USPS charges $50 on a commercial-price package when it finds hazardous materials that weren't declared and labeled (Notice 123: HAZMAT Noncompliance Fee; tracker entry). The Ground Advantage HAZMAT Handling Fee is $0.00.
  • Mercari: for packages postmarked from Sep 1, 2026, Mercari pays $25 of that fee and takes $25 from the seller (tracker entry).
  • Poshmark: since Oct 19, 2026, sellers pay the full $50 from their earnings when USPS flags a package (tracker entry).

Platform rules that apply to small electronics

eBay: the general rate on the whole order

Electronics pay 13.6% plus a per-order fee, and “The total amount of the sale includes the item price, any handling charges, any shipping costs collected from the buyer (some exceptions apply), sales tax, and any other applicable fees” (eBay fee page). On a $150 device with $8.55 of buyer-paid shipping, the fee is $21.96 instead of $20.80.

Mercari and Poshmark pass on USPS's hazmat fee

Both platforms charge sellers when USPS flags a package for undeclared hazardous materials; the amounts are under “If a package isn't declared” above. Mercari's 10% fee also applies to buyer-paid shipping: $15.86 on a $150 device with $8.55 of shipping.

TikTok Shop: 6%, or 5% for refurbished

TikTok Shop charges 6% on its Phones & Electronics subcategories and 5% on Pre-Owned Refurbished Phones & Electronics (TikTok Shop Academy), and “The Referral Fee calculation base includes the shipping fee paid by the customer” (TikTok Shop Academy). A $400 device pays $24.00 at 6% or $20.00 at 5%.

Whatnot

Whatnot charges 8% commission at the standard tier plus 2.9% + $0.30 processing on item, shipping and tax (Whatnot's fee page as checked Oct 14, 2026): $16.65 on $150 before shipping.

Packing small electronics

From USPS's packaging standards (DMM 601.3) and its packing steps (USPS: How to send a package):

  1. “Mailpieces containing lithium batteries must be packaged in rigid outer packaging unless excepted under 339.4” (Publication 52, 349.221(c)); a padded or poly bag is allowed only for a new or manufacturer-refurbished device inside its original box (Publication 52, 339.4).
  2. Switch it off and protect the power button: “Equipment containing lithium batteries must have effective means of preventing it from being inadvertently turned on or activated” (Publication 52, 349.221(g)).
  3. “Batteries installed in equipment must be protected from damage and short circuit” (Publication 52, 349.221(f)).
  4. “Package contents so they do not shift within the mailing container” (DMM 601.3.1.1).
  5. Reusing a box? USPS says to “make sure all old logos, barcodes, shipping labels, and addresses are covered or blacked out” (USPS). An old hazmat mark on a reused box can draw the $50 fee too.

Edge cases

For parts or not working

Pub 52's used-device definition includes a device that “Is not new in original packaging; Is not manufacturer-certified new or refurbished; and/or Has some form of damage or defect” (349.21(e)), so a for-parts device gets the same two marks and ground-only rule. If the battery itself is damaged, defective or recalled, Pub 52's table says “Prohibited, unless approved by the director, Product Classification” (Publication 52, 349 (Domestic Lithium Battery Mailability)).

A laptop battery that shows mAh, not Wh

Pub 52 rates lithium-ion batteries in watt-hours, found by “multiplying the rated capacity of a cell or battery in the ampere-hours (Ah) by its nominal voltage (V)” (349.21): a 4,400 mAh battery at 11.1 V is 4.4 x 11.1 = 48.8 Wh, inside the 100 Wh cap above. But 349.241 also requires the Wh marking on the battery itself, so one that shows only mAh and volts doesn't meet the rule as written. A battery rated over 100 Wh isn't mailable under 349.24 at all; shipped without its battery, the laptop isn't a lithium battery shipment.

A box of small devices rated 2.7 Wh or less

Batteries rated 2.7 Wh or less have a different limit: “For lithium-ion cells and batteries with a watt-hour rating up to 2.7 Wh, no mailpiece may exceed 2.5 kilograms (5.5 pounds). There is no maximum number of cells or batteries per mailpiece” (Publication 52, 349.242). The rating is printed on the battery, so check it before you pack several devices in one box: over 2.7 Wh, a mailpiece can hold no more than eight cells or two batteries (349.242), and Pub 52 adds that “a mailpiece may contain either 8 cells or 2 batteries, not both” (349, note 2). A used device still goes by ground with the two marks, and more than two items to one buyer need the lithium battery mark (see Several devices to one buyer, below).

New in box

A device that is new in its original packaging, or manufacturer-certified refurbished, isn't a used device under Pub 52 (349.21(e)), so the ground-only rule and the two marks don't apply to it, and 339.4 lets its original box go inside a padded or poly mailer. New devices may travel by air, so Priority Mail is open to it, but only in your own box: “USPS-produced Priority Mail Express and Priority Mail packaging supplies may not be used for shipping mailable hazardous materials” (Publication 52, 339.3). You still declare the battery when you buy the label: “Mailers must identify whether a shipment contains hazardous materials when generating the label” (Publication 52, 323.1).

A buyer with an APO address or overseas

Pub 52's international and military-mail rules are stricter than the domestic ones. Used, damaged or defective devices with lithium batteries “are prohibited and may not be mailed internationally or to, from, or between APO, FPO, or DPO locations under any circumstances” (Publication 52, 622.5). A new device can go, where the destination country or APO/FPO/DPO ZIP Code doesn't bar it, battery installed only: “Batteries must be installed in the equipment being shipped” (Publication 52, 622.5); “Each shipment may contain a maximum of four lithium cells or two lithium batteries” (Publication 52, 622.5); and no lithium battery marks at all: “Mailpieces must not display markings or labels identifying the contents as lithium batteries” (Publication 52, 622.5).

Replacement and aftermarket batteries

A device fitted with a replacement battery still has to meet the testing rule that covers every mailable lithium battery: “Each cell or battery must meet UN Manual of Tests and Criteria, Part III, 38.3” (Publication 52, 349.221(a)). A battery without a watt-hour marking also fails 349.241's marking rule (see the laptop case above).

Several devices to one buyer

Pub 52 looks at the whole order, not just one box. A consignment is “One or more mailpieces containing lithium batteries, entered into Postal Service networks by one mailer ... and intended for delivery to a single consignee at a single destination address” (349.21(b)), and “Packages in consignments of more than two items require DOT-approved lithium battery markings” (Publication 52, 349.221(i)). By that wording, an order of three or more devices sent to one buyer at once needs the DOT lithium battery mark, even when every battery is installed.

Questions

Can I ship a used phone through USPS?

Yes, by ground: “Used, damaged, or defective electronic devices are prohibited from air transportation” (Publication 52, 349 (Domestic Lithium Battery Mailability)). Ground Advantage is the service (“also the primary option for HAZMAT items that can't travel by air”, USPS): $7.33 to $8.95 for a boxed phone under 1 lb at commercial prices. Mark it “Restricted Electronic Device” and “Surface Transportation Only” and use a rigid box.

Do I need a lithium battery label on the box?

Not for batteries installed in the device, up to four cells or two batteries: “Mailpieces containing button-cell batteries installed in equipment (including circuit boards) or no more than four lithium cells or two lithium batteries installed in the equipment they operate are excepted” (Publication 52, 349.221(d)). A spare battery packed with it needs the lithium battery mark: “Mailpieces must display a DOT-approved lithium battery mark ... indicating UN3481, on the address side” (Publication 52, 349.243).

Can I ship a broken laptop?

A defective device ships like a used one: ground only, with the two marks (349.221(e)). A damaged, defective or recalled battery is a different case: “Prohibited, unless approved by the director, Product Classification” (Publication 52, 349 (Domestic Lithium Battery Mailability)).

What happens if I don't declare a battery?

On a commercial-price label, USPS can charge its $50.00 HAZMAT Noncompliance Fee (Notice 123); Mercari passes part of it to sellers and Poshmark all of it (details above). “Mailers must identify whether a shipment contains hazardous materials when generating the label” (Publication 52, 323.1).

Can I use a free Priority Mail box for a phone?

No: “USPS-produced Priority Mail Express and Priority Mail packaging supplies may not be used for shipping mailable hazardous materials” (Publication 52, 339.3), and Pub 52 treats lithium batteries as hazardous materials. A used phone can't go by Priority Mail at all: “Mailable hazardous materials that are prohibited from air transportation may not be sent as Priority Mail Express or Priority Mail” (Publication 52, 327.11). Use your own rigid box and a Ground Advantage label.

Can I ship a used phone overseas or to an APO address?

No, not with its battery: used, damaged or defective devices with lithium batteries “are prohibited and may not be mailed internationally or to, from, or between APO, FPO, or DPO locations under any circumstances” (Publication 52, 622.5). A new phone in its original packaging can go with the battery installed, up to four cells or two batteries, and with no lithium battery marks on the box, where the destination country or APO/FPO/DPO ZIP Code doesn't bar it (Publication 52, 622.5).

Can electronics go by Media Mail?

No: “Video games, computer drives, and digital drives do not qualify for Media Mail prices” (USPS), and other electronics aren't on the Media Mail list either (DMM 173.4.1).

Changes that affect what small electronics cost to sell and ship

From the change tracker, each checked against its official source.

  1. Poshmark Postage Effective · announced

    Poshmark stops covering USPS's $50 hazmat fee: sellers pay it all from Oct 19

    Poshmark paid all of USPS's $50 hazmat noncompliance fee through July 31, 2026, then charged sellers $5 for each flagged package from August 1. From October 19, 2026, sellers pay the full $50 from their earnings if USPS flags their package. Poshmark says the usual trigger is an old hazmat label on a reused box, including the small 'Limited Quantity' diamond.

    Your net on a $10 / $25 / $50 sale: n/a / n/a / n/a

    A penalty, not a per-sale fee: -$45 for each flagged package compared with the $5 share charged since Aug 1. Unflagged packages: no change.

    Source: Poshmark Blog, Oct 5, 2026 · Poshmark Blog: USPS Policy Update, Jul 9, 2026 ($0, then $5) · verified

  2. USPS Postage Effective · until · announced

    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 at commercial prices ($7.50 retail) for 26-70 lb to Zones 5-9. 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 · USPS Governors' Decision 26-7, Federal Register, Aug 28, 2026 · verified

  3. Mercari Postage Effective

    Mercari splits USPS's $50 hazmat fee: sellers pay $25

    Since July 12, 2026, USPS has charged a $50 HAZMAT Noncompliance Fee on commercial packages when it detects hazardous materials that weren't declared and labeled. Mercari's help page describes it as the fee USPS charges when a non-hazardous item ships in a box that still shows a HAZMAT label. For Mercari packages postmarked from September 1, 2026, Mercari pays $25 and takes $25 from the seller's earnings; earlier packages are exempt from the seller share. To avoid it, remove or fully black out old hazmat labels.

    Your net on a $10 / $25 / $50 sale: n/a / n/a / n/a

    A penalty, not a per-sale fee: -$25 for each flagged package, nothing otherwise.

    Source: Mercari help: Why was I charged for an overweight or oversized package? (Hazmat Fees) · USPS Governors' Decision 26-2 (the $50 fee), Federal Register, May 14, 2026 · verified

  4. USPS Postage Effective · announced

    USPS adds a $50 fee for undeclared hazmat; platforms warn that old labels on reused boxes trigger it

    Since July 12, 2026, USPS charges a $50 HAZMAT Noncompliance Fee on commercial-price competitive packages (Priority Mail Express, Priority Mail, Ground Advantage, Parcel Select and others) when it detects hazardous materials that weren't declared and labeled. Poshmark says the most common cause is reusing a box that still has old hazmat labels or markings, and Mercari tells sellers to remove or fully black out old hazmat labels on reused boxes. Notice 123 doesn't list the fee for Media Mail or for retail counter prices.

    Your net on a $10 / $25 / $50 sale: n/a / n/a / n/a

    A penalty, not a per-sale fee: $50 for each flagged commercial-label package. Mercari pays $25 of it (since Sept 1), and Poshmark pays none from Oct 19. eBay's notice on the July 12 USPS changes, which covers eBay Labels, says a $50.00 fee will be charged for every Priority Mail, Priority Mail Express and Ground Advantage package that doesn't meet USPS hazmat requirements, and tells sellers to remove or cover old markings on reused packaging (per the saved copy of Oct 14, 2026).

    Source: USPS Governors' Decision 26-2, Federal Register, May 14, 2026 · USPS newsroom, May 11, 2026 (filing announced) · USPS Notice 123 (current price list, fee lines) · Poshmark Blog, Oct 5, 2026 · Mercari help: Hazmat fees · eBay Community: USPS Rate and Service Update (July 12, 2026) · verified

  5. USPS Postage Effective · announced

    USPS adds a $7.50 hazmat handling fee on Priority Mail

    Since July 12, 2026, a Priority Mail or Priority Mail Express package containing hazardous materials pays a $7.50 HAZMAT Handling Fee, at both retail and commercial prices. Ground Advantage and Parcel Select also have the fee, but it is set at $0 for now and USPS kept the option to raise it. Commercial packages found with hazardous materials that were not properly declared and labeled can be charged a $50 HAZMAT Noncompliance Fee.

    Your net on a $10 / $25 / $50 sale: -$7.50 / -$7.50 / -$7.50

    If you pay for a Priority Mail label on a package with declared hazardous materials. The amount is the same at any sale price. Ground Advantage: $0 for now. The $50 fee applies only to commercial labels where hazmat was not declared or labeled correctly.

    Source: USPS Governors' Decision No. 26-2, Federal Register, May 14, 2026 · verified

Sources

Rates verified on from each official page below.

Free 1-page Reseller Cheat Sheet: fees on 8 platforms, Media Mail and stamp prices

What each platform takes from a $10, $25 and $50 sale, Media Mail 1-10 lb, Ground Advantage to Zones 1, 5 and 8, and the Forever stamp, on one printable page. The link appears as soon as you sign up.