I've never heard of any complaints or disputes after a transaction.
Of course, I've even met with foreigners and there were times when middle school students came and I was embarrassed while trading..
Looking at the posts below, it seems there are really many things to be careful about with secondhand transactions.
Ah! When I lived in Japan, there was a secondhand trading app called Mercari
Back then, I sold a camera after taking a 5% commission fee
I sent it with all the accessories, but the buyer contacted me saying the battery was missing
While talking on the phone, I kept telling them to look again, and they found it.
At that time, I thought that maybe I should have filmed a video while packing and attached a tamper seal.
