The worst is when someone puts a listing up and you're early for it (you manage to get lucky and reply within only a few minutes of the listing going up) and days, some times weeks, go by without that person reading the message.
I have had similar experiences, I make an offer, of what they are asking. No reply message had not even been looked at. This went on for months. They even posted new items. So I made offers on the new listings. No reply. If they are not selling, what are they doing posting items? Thanks Randall