i think there are enough proof to show this guy is a fraudster.

Maybe add him into blacklist?

of course he will make sure this deal go well cause he reads this thread and know if he trade nicely with you then proof that he is no fraudster and nice trader.

don't forget to take some pictures of him.

trading with who is a matter of preference.

Different people have different kind of attitude and personality. Just because he is a good buyer doesn't means he is a good seller. Cause buying have less commitment than selling.

Even if he is a lousy seller, some people still want to trade with this kind of people because they willing to take the chances and are more eager about the prices than the person they are trading with.

What this thread can do is warn these people and when they do get burned, serve them right. If they don't good for them.

This lbsiong definitely is not a reliable person from all his action. As for blacklisting this person or not is up to the mods.