As a new member, people will be cautious and may not want to deal with you. It's still rude not to answer your message. I've been strung along on sales. They want to come and look, then it's not a good week, then they found one cheaper and want to renegotiate. I still take every person serious but can see how some guys are just burnt on the process.
Getting some history on here will help. Starting a thread is a good start. Best thing you can get is a positive review on a game sale. I had a guy drive 5 hours to come look at a game just because I have good reviews.