Online marketplaces make it easy to buy and sell used goods, but they also give scammers a seat on both sides of the deal. Buyers can pay and never see the item. Sellers can ship a product and never see the money. The same traps show up again and again, and they are easy to spot once you know what to look for.
The two sides of marketplace scams
Marketplace scams split into two types. In one, a buyer pays and the goods never arrive, or they are cheap fakes. In the other, a seller hands over a product and the payment is fake, reversed, or never sent. Both buyers and sellers get targeted because the marketplace feels like a neutral, trustworthy space. Scammers exploit that trust by pushing you off the platform, away from any record or protection.
Buyer traps: how they take your money
The most common buyer trap is paying outside the platform. A seller asks you to send money by wire, peer-to-peer app, or prepaid cards, promising to ship right away. Once the money is gone, so are they.
- Fake tracking numbers. The scammer sends a tracking ID that looks real but belongs to a package going elsewhere, or an empty envelope sent to a random address.
- Counterfeit or swapped goods. The listing shows a genuine item, but what arrives is a knockoff or an empty box.
- Payment to an invented "escrow" service. A seller insists you pay a third-party handler before they ship. The escrow service does not exist.
Seller traps: how they get your goods for free
Sellers face the mirror image of the same problem. The buyer seems eager and asks few questions, then hits you with a payment trick:
- Overpayment checks. The buyer sends a check for more than the price and asks you to refund the difference. It bounces later, and you are out the refund you sent.
- Fake payment confirmations. You receive an email that looks like a payment notice from the platform, but the money never arrives. The email is forged.
- Refunds that were never sent. A buyer claims the item arrived damaged and asks you to refund them directly. Some also open a dispute with their card provider to claw back the money while keeping the item.
These tricks play on urgency and your desire to close a sale. When someone is in a hurry to pay you, slow down.
Why platform checkout and buyer protection matter
When you pay through the marketplace itself, the platform holds the money and offers dispute resolution if something goes wrong. That is exactly why scammers push you to leave it. A private email thread is not a transaction record, and money sent by wire, gift card, or peer-to-peer app is almost impossible to recover. The platform's checkout button is a feature, not a burden. Treat anyone who steers you away from it as a red flag, and be wary of the gift card scams that ask you to pay with prepaid cards.
Red flags that should stop the conversation
- Pressure and urgency. A buyer or seller who says the deal must close today, or who gets angry when you ask questions, is hiding something.
- Unusual payment methods. Requests for wire transfers, gift cards, cryptocurrency, or apps with no buyer protection are a reliable warning sign.
- Stories about escrow or couriers. Tales about a courier who will pay in cash, or a secure escrow you must fund first, are classic scripts with no real service behind them.
- Reluctance to meet or show the item. A seller who cannot show the product, or who insists on shipping when an in-person meetup is possible, deserves extra caution.
The same signals appear in fake job offers, where criminals ask for payment up front.
How to transact safely
- Meet in person when possible. For big items like vehicles and furniture, meet in a public place and use cash or an in-app payment. For shipped items, stay on the platform.
- Use the platform's payment system. Never move to wire transfers, prepaid cards, or personal checks, no matter what excuse the other person gives.
- Document everything. Save the listing, the messages, tracking numbers, and photos of the item as it was packed and as it arrived.
- Check the other side. Look at profiles, reviews, and account age. A brand-new account with a high-priced item is worth extra scrutiny.
If you are sent to an outside page to pay, learn how to tell if a website is safe. Scammers build fake payment pages that exist only to harvest your card details.
What to do when you get scammed
- Report to the platform. Most marketplaces have a report button and a dispute process. Use it quickly, because some refund windows are short.
- Report to the authorities. In the United States, file a complaint with the FTC and report the crime to the FBI's Internet Crime Complaint Center.
- Contact your bank or card provider. Tell them you were defrauded and ask about chargebacks or account-level protections.
- Warn others. Leave a review and flag the profile.
Even if the money cannot be recovered, reporting helps authorities connect similar complaints.
FAQ
Is it safe to pay by wire transfer or gift card? No. These methods have no buyer protection and no realistic way to reverse the payment. Legitimate sellers do not demand them.
What should I do if a buyer sends a check for more than the price? Treat it as a scam. Do not refund the difference until the check fully clears. Most overpayment checks bounce later.
Do buyer and seller protections apply if I pay outside the platform? No. Protection almost always depends on the transaction happening through the marketplace's own payment system. Off-platform payments are not covered.
What evidence should I keep if something goes wrong? Save screenshots of the listing, all messages, payment receipts, tracking numbers, and photos of the packaging and the item.
Sources and further reading
---Written by Hassan Arshad, founder of UsefulOrbit. Last updated August 31, 2026.