I don't know it just seems like I'm playing an annoying game of Guess Who at the seller's house in these cases.
Me: Does the price for this item have a 2 in it?
Seller: No, guess again
Me: Does it end in one 0?
Seller: No
Me: Does it end in two 0's?
Seller: You're getting close....
Me: Is it $100?!?!
Seller:
.... Get out of my house, and never look back.
* Realizes he somehow sleep walked back onto his soap box, and slowly steps down again *