Kinda glad to see the last few posts, cause where the guy was wrong to do you that way, a couple of things done on your behalf might have prevented it, as those described above. Regretfully its part of the learning process. And though I doubt it, maybe the guy thought he was backing out of the deal in a polite way, rather than just tell you he didn't like it for whatever reason(I mean after all, he does own the Boulders, gotta have or had a little money)
And by the way, this guy was NOT a buyer, as he did not buy. He is what a lot of salespeople call a lizard, whether it be the store lizard or the car lot lizard, they are all of the same family, genurus troublenotneedus, and they habitate the world. You see them every few days, scurrying around your store or lot, and about the moment you think you have them pinned down on something, they scurry away.
At least he didn't pull your chain farther and tell you he didn't want them after possibly succeeding in getting you to leave them for 3 days.
I would tell you as I would a friend over a beer, forget about the anger and stuff(and hard to do right now I know0, it will just make us all older but remember the deal somewhere in your mind, that way it won't happen again.