Cool article that looks at cost of living as an expat with Tokyo at #1, London drops a bit and Karachi brings up the rear. Overall an interesting cost of living survey
http://ipmimagazine.com/index.php?option=com_content&view=article&id=747%3Aipmi-magazine-expatriate-life-tokyo-is-worlds-most-expensive-city-for-expatriates-according-to-mercers-latest-cost-of-living-survey-2012&catid=37%3Aexpatriate-health-insurance-news-ipmi-magazine&Itemid=55&goback=%2Egde_35889_member_124039958