Teens increasingly sell old games, clothes and gear online. Scammers target sellers as well as buyers.
The most common trick is a fake 'payment sent' screenshot or email, followed by a courier who collects the item before the seller checks.
Another is the 'overpayment': the buyer claims to have paid too much and asks for the difference back. The original payment never existed.
Teach the habit: check the real bank or marketplace app before handing anything over, and use the site's own checkout.
The rule from the episode: it's not paid till it's in your account.
The rule: It's not paid till it's in your account.
Phishmael & Friends