hi papbestdad, thanks for your reply.
I have found that most of the agents will ask you to sign the "exclusive", otherwise won't market it for you
for self-selling, the two important things are, you need to classify the buyer and the selling skill... as a seller, I don't think we have the skill as good as the agent. for eg. they can sell maybe 10k more than you, then that worth of the agent fees already.
but is there any tricks you will encounter as a seller?