You mean it's not a good idea to "gas monkey" sellers? LOL
I love those people. Same as others have mentioned, I have a price on it and you offer 25-50%. Don't have time for you. Most of my stuff even at the marked price was a really good value.
My last day really running a swap spot I barely sold enough to cover fuel/entry. That was the last time I bought a spot. Best days were solid and paid the rent for a few months!