Hagglee
A person who can make a salesperson feel like they just lost a bet. They know when an item is overpriced and will not stop until they get it for less.
I bought a brand new TV for $300. The guy at the store thought I was a scammer.
The woman at the flea market tried to sell me a toaster for $50. I got it for $5. She looked like she just got dumped.
I told the guy at the mall that his discount was worse than my mom’s cooking. He gave me 50% off.