Listed an item for sale, priced to sell. Get a few nibbles right away, including someone who asks a few questions and then states they will pay full price, they can come pick up at 3. I send them my address at 2:30 and they reply "that's not it City". Oops, sure enough, I had accidentally listed the item to where my parents live about 90 minutes away (I was helping them sell some stuff the week prior).
Explained the problem, told the guy I was willing to deliver the item Saturday when I was next over in his city. Buyer says thanks but he's not interested, then leaves a 1 star review.