Hooked on HP,
In reality, there is an appointment, in that the parties have to agree upon a time to meet, greet and view the item. That said, the principle here is that it remains first come, first served. It just has to be. I just don't know of any other way. A guy promises he is coming, he calls or doesn't call, and is late or doesn't show. Meanwhile, a perfectly hot to trot buyer shows up. What are you gonna do? I say make no promises to the first guy, second guy, whatever. Speak the truth. First come, first served.
I disagree with this to an extent.
While I do agree that it is first come first serve in general, there are some exceptions for me.
For example, as a buyer, If I see something I am interested in buying, but the guy is an hour+ drive for me, and I tell him I am on my way, I expect it to be there when I arrive. I dont want someone else calling him that lives 10 min away, showing up, and buying it out from under me.
If it were me, as a responsible seller, I'd call the first guy, verify that he is comming, and explain that someone else called interested in the item. I'd also explain to the second guy that someone else is on the way and if something doesn't work out, I'll let him know.
I have actually done this before. I was selling a chainsaw at a fairly good price. Guy called and we agreed to meet. He was on his way from 1.5hrs away. In the meantime, I had someone else call and said he could me here in 25min and offered me more than the asking price if I would sell to him and NOT the first guy. I politely declined and told him that if we (me and the first guy) didn't strike up a deal, I'd let him know. I sold it to the first guy for my asking price.