In 1962, a missing hyphen in the code used to navigate Mariner 1 forced NASA to explode the rocket, at a loss of $80 million.
An e-Bay seller left out a letter in the name of a rare bottle of beer. A savvy biddy bought the beer for $300 and resold it minutes later for $503,300.
A typo caused houses in Wasatch County, Utah to be assessed at $1 billion, more than double the actual market value.