or they jack up the shipping cost because they didn't get what they wanted.
btw, this started into a flame war last time, and they shut down the thread.
All because some people thought its okay to jack up shipping cost (handeling) when they didn't get the money they expected.
Ive also noticed. If something doesn't sell the first week. It will be relisted the 2nd week, and sell for higher then the first weeks price.