He specified an appointment time and place but he never turned up. Just in case, I drove around to two places, Orchard and NEWest. But he never come and we didn't meet. What he says is horseshit. I can show my guarantee. Unfortunately I got tangled up with the wrong people.

I asked him to let me check the condition and authenticate it in advance. In other words, I did not promise to buy. When I declined in advance with apologies, he repeatedly threatened to me “I will write a bad review if you don’t pay $100 because you should pay for my time and I had paid $100 for authentication appointment”. Does it cost to book an authentication appointment? I’ve never heard.