If he wouldn't come up with a number before I went to check it out: I wouldn't waste my gas.
Yep... Me neither.
I did that once.
Dude said, "Make me an offer.", then tried to make me counter offer myself.
I told him to come up with a price or we were done.
We were done.
It was the dumbest interaction with a seller I've ever had.
That guy probably still has the car and that was 24 years ago.