I remember there was a guy... a few year back... that had an ebay business that sold expensive collectibles. Without anyone's knowledge, he spent a month listing items he did not have and taking money for them. Then he just fell off the face of the earth. They thought his wife and/or workers were in on it... but after a few months, they still never heard a word.
I don't remember if he was ever caught, but he got away with hundreds of thousands of dollars.
I love when they get caught... but usually they never pay the money back to the poor ppl who sent it in good faith.