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Selling Online? Watch for These Marketplace Buyer Scams

By Chris Harrison · October 8, 2026 · 5 min read

Online marketplaces are a great way to sell a riding mower, a couch or a set of tires. They’re also full of fake buyers. Here are the scams we hear about most and how to avoid them.

Example of an online marketplace buyer scam conversation
Three classic buyer scams in one conversation: the code, the overpayment and the check.

1. “Read me the verification code”

The “buyer” says they want to make sure you’re a real person and sends you a code by text. That code is actually being used to set up a phone number or account in your name — which they’ll use for other scams. Never share a code sent to your phone with anyone.

2. The overpayment

A buyer “accidentally” sends more than your asking price and asks you to refund the difference. The original payment is fake, stolen or will be reversed — and the refund you send is real money out of your pocket.

3. Fake checks and “my mover will pick it up”

The buyer can’t meet in person and offers a cashier’s check or money order. Fake checks can look completely real, and your bank may make the money available before discovering the check is bad days later. You’re responsible for the full amount.

4. Fake payment confirmation emails

You get an email that says payment is “pending” until you send a shipping number or pay a fee. Real payment apps don’t work that way. Check the app itself, not your email.

How to sell safely

  • Meet in person in a public place — many police departments offer safe exchange spots.
  • Take cash or a payment you can confirm in your own app before the item leaves.
  • Don’t move the conversation to text or email if the buyer pushes to.
  • Never accept more than the asking price or send “refunds.”
  • Never share verification codes.

Buying? The same rules apply in reverse: see it in person before paying, and be wary of prices that seem too good to be true. Questions? Call us at 620-960-8711.

Want more free guides like this? Browse our Scam & Security Library — real examples of phishing emails, scam texts, fake pop-ups and more.

Chris Harrison, owner of Ness City Computer Service
About the author
Chris Harrison

Chris owns Ness City Computer Service and has more than 30 years of IT experience helping Kansas homes and businesses keep their technology running and secure.

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