Stadium Events [Nintendo NES] – Price: $14,890
The Track and Field game with the power pad that everyone remembers when they were kids was not originally made by Nintendo. It was developed by Bandai and released to the public for a very short time before Nintendo decided to buy the rights and released it themselves. The games that were sold to stores were supposed to be sent back, but not all of them were.
The cartridge itself sells for thousands of dollars but is much more valuable when it includes the original box and manual. Another, less rare version, exists that was sold in Europe.