http://cgi.ebay.com/FACTORY-SEALED-N...item20af8b55d6
The game is Stadium Events, published by Bandai, and is generally accepted as the rarest of all NES games released in North America. The game is rare due to its limited run of what is believed to be around 2,000 copies; and due to a Nintendo accessory licensing issue with the Family Fun Fitness Control Mat (which would eventually become Nintendo's Power Pad), an estimated 200 copies reached consumers. The eBay auction was able to reach such an astonishing price due to the game being still factory sealed.
and you may have read / heard that Superman #1 and Batman #1 sold for $1M.
so what old & rare toy / book / game do you have lurking in your closet?