When an item is sold on a classified ad platform, a fee has to be paid for transport or the alleged bank transfer, for example.
There are many variants with this type of fraud. Typically, however, despite a sale, money still has to be transferred to the buyer or to a third company that is then supposed to organise transport, for example. There is also a variant where the payment is to be processed via PayPal. Afterwards, a fake email comes from PayPal stating that fees have to be paid before the transaction can be executed. Similarly, alleged transfer confirmations from well-known banks are sent by email in this type of fraud, giving the impression that a transfer has taken place. These guarantees cannot be checked and are usually fake.