When I am selling I always tell people first come with cash gets it. No holds unless you are in route, I will hold for a couple hours. I don't blame the seller, he's not your friend, who knows if you would have shown up. I lost a few deals because I waited for arranged buyers. It's really both yours and his fault. He should have made you aware it was first come basis though. It's not yours until you see the sellers house in the rear view mirror.