Wow, I have to say that there really are lots of good points on both sides. The way the seller came across to me, I am not sure if I would push the issue. To me it comes across as I don't have time for you now, and I may not have time for you in the future. Now, as in most emails or posts, you cannot read a person. This is why I prefer to deal with people in person, on the phone or at least know with a great deal of certainty who they are thru a site like this. Do I want a seller to drop everything just for me, expecially when they are not sure if there will be a sale? No. However, when I have dealt with people such as Adam (and some of the other end of the spectrum), I am ALOT more picky on who I will hand my hard earned money too. Customer service is the #1 thing I look for. Having spent my whole adult life working in CS and complaint resolution, I am very tollerant of things coming up. However I will not put up with rude behavior nor will I spend my money where someone seems like they don't care if I buy from them or not.
While he may have been extrordanarily busy and none of us know for sure, I think he could have done things differently. If I were in the same situation, I would have requested a phone number from the potential buyer. He did not know that Josh was really going to go thru with it, but a few minute phone call could have shed more light on things I think. It is the sellers right to take it to the show however.