I got screwed on a textbook my wife was selling. I sold it on half.com and the post office lost it so I had to give the $75 back to the buyer. The USPS sent the book back to my old address (FAIL! mother and father in laws house) and it looked like someone flipped it off of the back of a truck and rolled it down 3 flights of stairs. Now I can't sell it because it damaged and everyone is done buying books for the semester.
So it was 1. lost 2. damaged 3. returned to the wrong address. Epic fail got to love the USPS.