dumbest excuse someone gave you for not buying part/ car from you?

Another issue with the "make an offer" crowd, is that if someone has 4 or 5 things I'm interested in, now it takes 4-5 times longer or more, to figure out if I can afford all of them or some of them, and I get put on the spot to make a decision each time.

Not a very comfortable position, and I usually end up asking about only one, and passing on anything from those folks, IMO, that guy just lost multiple potential sales because he either A- was too lazy to figure an asking price, or B- wanted to play head games with potential buyers.