On e-bay (according to my book) this dude put up for bid, a standard £1 coin.
Guess how much he got for it? £90,000. This was a normal coin. Then, he sold his story to papers/tabloids to gain double that. He was so popular in the news, papers etc. he made £1,000,000! This was just from a standard £1 coin.
Also, a dude sold a Tesco bag for £4 :p.