You could offer a genuine, brand new Rolex watch on Craigslist or Kijiji for $1, and somebody would still ask if they could have it for 50 cents. 😛
Had the same experience selling tires. Uniroyal Tigerpaws I only used for less than a year before scrapping my old car. I think I paid $80 each for them. Was selling them for $50 rims included. Just crappy stock steel ones. Guy tried to shove $150 in my face. Argued with him because they were already at a significant discount and he agreed to pay what I wanted originally. He got his tires, only after paying me $200.