Robert,
I feel your pain brother! I have a first come, first served policy. I do know what you mean though, I am a serious buyer as well. The ones that really tick me off are the ones that don't bother to tell you they sold it. At least the man called you. Have sat and waited on the " I will be there first thing in the morning" guys I have no clue how many times. I do know when we find the deal we want, we do not wait, simply for the reason you just experienced. On occassion we have waited a couple days, but that was gut instinct only. The man with the first cash gets the car/part. Good luck finding your car man!! By the way, what kind of car are you searching for?
Later,
Rudy