This statement is getting at the crux of the problem. This selling space operates uniquely, at least compared to any other online selling venue that I've used. Selling and buying is a very personal matter, between two people, and when money is involved, no matter the love of the hobby, people are on their guard. But we do so in a loosely regulated, supposedly self-regulated manner with no set of rules. We've all agreed, at least implicitly by participation within what guidelines do exist, if not explicitly, to abide by community norms, but as we're something of a roughshod democracy (prepares for flak), that gets messy.
Anyhow, my , which is worth exactly as much as all advice is worth: exactly what you paid for it.