This reddit link from 9 months ago is probably still relevant:
<a href="http://www.reddit.com/r/explainlikeimfive/comments/1owop4/eli5_how_did_healthcaregov_cost_634000000_that/" rel="nofollow">http://www.reddit.com/r/explainlikeimfive/comments/1owop4/el...</a>
The US got off easy. Australia has been expertly spending extraordinary amounts of money on IT projects for years.<p>For example, Melbourne's public transport ticket system cost US$1.3 Billion. And that's just for one city.