Well, this makes twice.

[SteveOak]

I think it should

Welching should result in an automatic ban.

As should ghosting.

I’ve completed tons of sales and purchases. I have to admit that one time I settled for a scope that was close to what I wanted. Hours after I sent the PM, the exact scope I wanted came up. In that instance I called him and explained the situation. I told him I would buy his too if he wanted, but he said no worries.

Recently I sold an expensive item. The buyer explained a family emergency came up and he would have to pass. I said no problem. I ended up selling it for a higher price!

Both are completely acceptable.