Hey, another car question: Paying "cash"?

[Trouble]

M A V I C wrote:
As Racer X said, to a private party cash means cash. Some dealers may think the same. I remember when I sold my last car, two girls show up to look at it, and wanted to buy it right then. They had well over $10k cash in a bag. Yes, I proofed every bill 100's.

What did you do with the dye pack?