1. Check the seller's item condition through photos to confirm it is normal.
(If the item photos are poor, the risk increases.)
2. Check the seller's registration period.
(The shorter the registration period, the greater the risk.)
3. Check the seller's previous listings.
(There should be no complaint comments on their listings after registration.)
4. Do not conduct delivery transactions.
(Delivery transactions inherently require upfront payment, which creates unnecessary risk.)
5. If you do conduct a delivery transaction, only deal in amounts you wouldn't mind losing.
6. Deal in person.
(In-person transactions also carry the risk of broken promises, but it's better than losing money...)
7. If the seller talks about broken promises and asks for a deposit, do not proceed with the transaction.
(These days, some people who appear to be teenagers to those in their early 20s collect deposits under the pretense of broken promises.)
(There is a high possibility of being scammed. Don't do it!)
8. Inspect the item on-site and transfer payment directly to the other party right then and there.
Even with all this, there are endless scam risks such as insufficient on-site item inspection and undisclosed defects.
However, I think that just avoiding upfront payments and delivery transactions would eliminate about 70~80% of used goods scam-related posts on the board.
What tips do you have for avoiding used goods scams?