Come to find out, Olympic Games are always over budget. For the past 50 years, overruns have averaged 179 percent. Oxford University researcher and cost overrun expert Bent Flyvbjerg studied Olympic budgets from 1960 to 2012 and found that London's 101 percent budget increase is in line with the Beijing, Barcelona and Montreal games. But overall, the London Games are expected to be the most expensive in history.
Are cost estimates ever right?
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