Well, I'm experiencing this. The buyer for the bedroom set I mentioned above was adamant that she was coming at 10am on Wednesday--and she never showed up. I texted her twice, no answer. I had another offer for the same bedroom set and she wanted to pick it up in two weeks, so I told her in order for me to hold it for her, I had to have her come and look at it, be sure she wanted it, and pay for it. I never heard back from her.
So another guy just asked me about it, so we'll see what his deal is.
This isn't going as smoothly as I thought. DH is getting depressed and overwhelmed. So am I frankly, but I refuse to give into it. Plus these are the two busiest work weeks I've had all year.