Reselling Scams in the US: the ones aimed at you, the seller

Why seller-side is different

Search for "Poshmark scams" or "Mercari scams" and you will find a wall of results explaining how to avoid buying a fake handbag. That advice is fine. It is also written for the wrong person, if the person is you and you are the one packing a box.

Seller-side scams work differently, and they are more expensive. A buyer who gets scammed loses money. A seller who gets scammed loses the money and the item — the dress is gone, the payment is reversed, and the person who has both is no longer replying.

They are also under-documented. The generic security sites cover the buyer's side well because that is the bigger audience. What almost nobody writes down is the specific mechanic on each platform: which flow the scam exploits, which policy sentence decides the outcome, and what evidence the platform actually looks at.

That is what this guide is. Every policy quoted here was read on its own site on 31 July 2026, and every reporting channel was checked before it was listed. Where a platform has not published a rule, we say so rather than filling the gap with something plausible.

What platform protection actually covers

Before the scams themselves, the sentence that decides most of them.

Every major US resale platform runs some form of protection scheme. These are services provided under the platform's own terms — not rights under federal or state law — and they share one hard boundary that is stated openly in the policies themselves.

Poshmark's Posh Protect page puts it in one line:

"Posh Protect does not cover trades or transactions completed off of the Poshmark platform."

Mercari approaches the same boundary from the other direction. Its Prohibited Conduct policy lists, among the things you may not do:

"Encouraging payments outside of Mercari"

"Proposing or completing a transaction in person or off of the Mercari platform"

Three consequences follow, and they apply on every platform in this guide:

1. Protection lives inside the payment system. A sale settled by Zelle, Venmo, Cash App or a "friends and family" PayPal transfer is invisible to it. No amount of screenshots makes it visible afterwards.
2. It is a process, not a guarantee. Outcomes depend on evidence and on the platform's own assessment. Nobody — including us — can promise you a particular result.
3. The terms change. Read the current version on the platform before you rely on it, rather than a forum post or, for that matter, this article.

Poshmark: the empty box and the off-platform pull

Poshmark is the most social of the US platforms — sharing, Posh Parties, closets, a genuine community culture. That sociability is exactly what the two main seller-side scams use.

The empty-box return

You sell an item. It ships, it is delivered, and the buyer opens a return case. When the parcel comes back, it is empty, or it contains something that is not what you sent — a cheaper garment, a counterfeit version of the same piece, or filler.

The buyer keeps your item and gets a refund. You are left arguing about the contents of a box that is now in your hands and unopened on camera nowhere.

Poshmark's Posh Protect covers the buyer side of this equation — "We will give you a full refund if your item never ships or does not match the listing description" — and buyers have 72 hours after delivery to open a case. As a seller, your position in that process rests on what you can show.

There is no policy trick. What separates sellers who come out of this intact from those who do not is documentation created before the dispute existed:

• Photographs of the item, from several angles, immediately before packing;
• The sealed parcel photographed with the shipping label legible in frame;
• For a higher-value item, an unbroken video of the packing, from empty box to sealed tape, without a cut;
• A video of opening the returned parcel, started before the tape is broken.

That last one matters more than people expect. A return you opened off-camera and then photographed is, evidentially, a box you had access to.

The pull off-platform

The Poshmark version usually arrives inside a friendly conversation, because everything on Poshmark arrives inside a friendly conversation. A comment on your listing asks for your email or number "because the photos are blurry". A buyer offers to pay a bit more if you cancel the order and take a transfer instead.

The policy answer is the one quoted above: off-platform means unprotected, in Poshmark's own words. The practical answer is that a real buyer who wants a clearer photo can ask for it in the app, where the request and your reply are both recorded.

Triangulation

The more sophisticated version: a scammer buys your item with a stolen card and has it shipped to a third party who bought it in good faith somewhere else entirely. You ship, you get paid, and weeks later the payment reverses when the real cardholder disputes the charge.

You cannot detect this from your side, and that is the point — the transaction looks normal because from your position it is normal. The protection is procedural rather than perceptive: ship on the platform's label to the order address, keep everything documented, so that when the reversal comes you are a seller who followed the process rather than one who improvised.

Mercari: the address switch, and why it is the local speciality

Mercari's shipping flow is built around prepaid labels the platform generates for you. That is convenient, and it creates the seller-side scam that is most specific to this platform.

"Can you ship it to my new address instead?"

Shortly after buying, the buyer messages you. They moved last week. They mistyped. They are at their mother's. Could you send it to this other address — they will paste it right here.

If you do it, you have shipped to an address that does not appear on the order. The platform's record shows a package that went somewhere other than where it was supposed to. Depending on the circumstances, the buyer can then report a non-delivery, and the transaction record supports them rather than you.

Mercari's own Prohibited Conduct policy is aimed at the same underlying behaviour when it prohibits "proposing or completing a transaction in person or off of the Mercari platform" — an address supplied by message, outside the order, is the first step out of the system.

The 72-hour clock

Mercari's Buyer Protection gives buyers 72 hours after confirmed delivery to report an item as not as described; if no claim is filed in that window, payment is released to the seller.

For you this cuts two ways. It is a defined end point, which is good. It also means the 72 hours after delivery are the window in which your documentation has to exist already — you cannot build it retroactively once a claim lands. Photograph before you ship, not after you are accused.

The bait package and the overpayment

Two older formats still in circulation. In the first, a buyer claims the parcel arrived empty or containing something worthless — the mirror image of the empty-box return, run at delivery instead of at return. In the second, someone "accidentally" overpays and asks you to refund the difference by another method; the original payment then reverses, and the refund you sent by a different channel does not.

Both are answered by the same two habits: document what goes in the box, and never move money outside the platform's system for any reason, including generosity.

Depop: payment screenshots and the move to DMs

Depop's audience is young — the platform reports that the large majority of its users are under 26 — and its culture is heavily conversational, with a lot of activity happening in DMs before a sale. Both facts shape the scams here.

The fake payment confirmation

You receive what looks like a payment notification: right amount, close-enough branding, an urgent tone about shipping today. It is an email or a screenshot, and it is designed to get the parcel moving before you check the only place that counts.

The rule is absolute and simple: money exists when it appears in your balance, in the app. Not in an email. Not in a screenshot. Not in a text message that says the funds are "pending release once you upload tracking".

The move to Instagram

"Message me on IG, it's easier." It genuinely is easier — for the other party. Off the platform there is no order record, no protected payment, no report button that leads anywhere, and no history for anyone to review later.

Depop is a platform where an enormous amount of legitimate conversation happens in DMs, which is exactly why the transition from "chatting in DMs" to "paying in DMs" can feel like a small step. It is not a small step. It is the step.

The condition dispute that is not a scam

Worth naming separately, because it is more common than fraud: the buyer who genuinely believed the item was in better condition than it is. Depop caps listings at a small number of photos, which puts real pressure on each one to carry information.

That is a documentation problem, not a security problem, and it is fixable in advance — photograph the flaw and describe it. A dispute over a stain you showed in the listing is a very different conversation from a dispute over a stain the buyer discovered.

eBay and Vinted US: the two edges of the market

eBay: authenticity is the structuring risk

On eBay the dominant fashion risk is not payment fraud but authenticity and item-not-as-described disputes, particularly in the pre-owned designer segment where the money is.

eBay's picture policy is unusually explicit about images, and the specifics protect sellers as much as buyers. Not allowed:

"Photos that don't accurately represent the item"

"Stock photos for used, damaged, or defective items"

"Photos with added text, artwork or marketing material"

"Watermarks of any type, including those used for ownership attributions"

Read from the seller's chair, the second line is a requirement to photograph the actual used item — which is also precisely the documentation that answers a not-as-described claim later. The policy and your self-interest point the same way.

Vinted US: a young market with thin advice

Vinted launched in the United States in January 2026, and its US seller community is correspondingly new. The scam mechanics are the same as everywhere else, but two things are specific to the situation.

First, the advice ecosystem is thin: most Vinted seller guidance online was written for European markets, with European consumer law and European shipping in the background. Our guide to how Vinted USA works and what sellers pay covers the US-specific mechanics. Second, a new user base is a softer target for the "I'm new here, help me out" framing that off-platform requests use.

Vinted's catalog rules apply here as elsewhere, and on photos they are strict:

"They have to be taken by you with the purpose of using the photos on Vinted."

"They cannot be replaced with stock photos, photos from ads and watermarked images."

"They have to represent the item as it is."

Our existing Vinted material applies without modification to the US platform — the complete scams guide covers twelve formats in detail, and the guide to winning a dispute walks through the evidence that carries weight.

The evidence file that wins cases

Everything above converges on one idea, so it deserves its own section: in a dispute, you do not have what happened. You have what you can show.

The platform reviewing your case was not there. It has your account, the other party's account, and whatever artefacts exist. Your memory of a well-packed parcel is not an artefact.

At listing time — photographs of the real item in good light, every angle, flaws included and visible. This is the layer people skip, and it is the one that answers "not as described", because that claim is by definition a claim about the gap between the listing and the item.

At packing time — the item photographed one more time, the packaging, then the sealed parcel with the label readable in shot. For anything expensive, a single unbroken video from empty box to sealed tape. No cuts, because a cut is where a doubt lives.

At shipping time — the platform's own label, the order address unchanged, the receipt kept, the tracking number entered in the platform rather than messaged.

If a return arrives — start recording before you touch the tape.

Here is the part that gets left out of scam guides, and it may be the most valuable paragraph here: a substantial share of the disputes sellers face are not fraud. They are buyers who received exactly what was listed and expected something different, because the photos were dark, partial, or flattering in a way the garment was not.

Nobody was dishonest. The seller still loses the sale, the shipping, the time and a rating.

That failure mode is fixable in advance, and it is cheaper to fix than any scam is to fight. Clear, accurate photographs of the real item — good light, every angle, flaws shown rather than hidden — prevent the dispute from being opened at all. That is the entire idea behind Vendy Studio: a clean, well-lit listing image of your actual item, from a phone photo, without a studio setup. You remain responsible for what you publish, and each platform's current image rules are the ones that apply, so check them before you list.

For the technique itself, our complete photo guide covers lighting, angles and what makes a first image stop the scroll.

Where to report in the US

Order matters, because the channels do very different things and only one of them can move money.

1. Your bank, card issuer or payment provider — first, and immediately. This is the only step with a realistic chance of recovering funds, and it is time-sensitive. A chargeback may be available; a card may need freezing.

2. Stop communicating. Do not negotiate, do not warn them you are reporting, do not give them the chance to delete the account while you are still typing. Screenshot first, block second.

3. Document before it disappears. The listing, the full message thread, the usernames, the order page, the tracking, the payment record. Accounts get deleted and threads vanish; your screenshots do not.

4. Report inside the platform. Use the report function on the order and on the profile. This is what lets the platform act on the account, and it creates the internal record any later claim rests on.

5. The FTC — ReportFraud.ftc.gov. The Federal Trade Commission's fraud reporting channel. The FTC enforces the federal standard that, in its own words, an advertisement "must be truthful, not misleading, and, when appropriate, backed by scientific evidence" — and its fraud reports feed the enforcement picture.

6. The FBI — IC3.gov. The Internet Crime Complaint Center describes itself as "the central hub for reporting cyber-enabled crime" and states that "it is run by the FBI". For an internet-enabled fraud, this is the federal criminal channel. File at complaint.ic3.gov.

7. The U.S. Postal Inspection Service — uspis.gov/report. If the U.S. Mail carried the fraud, USPIS takes reports, and its mail-fraud category explicitly includes online auctions.

8. Your state attorney general — usa.gov/state-attorney-general. Consumer complaints at state level, where a lot of practical enforcement actually happens.

The US seller's checklist

And one thing to do this week, before anything goes wrong

Go and look at your three highest-value active listings. Ask, for each one, a single question: if this buyer opened a "not as described" case tomorrow, what would I be able to show?

If the answer is "the photos in the listing, and they are honest and complete", you are in good shape. If the answer is "some photos I took in bad light that hide more than they show", you have found this week's job — and you have found it while it is still cheap to fix.

FAQ: Selling Safely on US Resale Platforms

Sources

All consulted 31 July 2026.

• Poshmark — Posh Protect (does not cover transactions completed off the platform; 72-hour window to open a case) and Community Guidelines
• Mercari — Prohibited Conduct (off-platform payments and transactions), Buyer Protection (72 hours after confirmed delivery), Seller Protection and Marketplace Guidelines
• Depop — What are 'stock images'? (help centre, last updated 13 May 2025)
• eBay — Picture policy
• Vinted — Catalog rules
• Federal Trade Commission — ReportFraud.ftc.gov and Truth in advertising
• FBI Internet Crime Complaint Center — IC3.gov, IC3 FAQ and complaint filing
• U.S. Postal Inspection Service — Report a crime
• USA.gov — State attorneys general

Platform policies and agency guidance change without notice. Check the current version before relying on any of it. Where a platform has not published a rule on a point, we have said so rather than inferring one.

If your sales are growing to the point where reporting income is the next question, the companion piece to this one is our 1099-K tax guide for US sellers, which covers the IRS threshold that actually applies rather than the one most articles still repeat. And if you are deciding where to list in the first place, we compare the platforms side by side in Vinted vs Poshmark vs Depop vs Mercari.