If you have five minutes
This ebay listing is worth a read. A pack of Pokemon cards probably sells for $2.50 but the story that goes with the cards is at least going to net the owner $103 (at the time of this posting). 44 bids, almost 900 watchers, and 14,000 comments for this lady to respond to.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=130144061675