Apple's iPad Air costs less to make than its predecessors, despite its more expensive display, according to a new report that reveals Apple's gross margins for the iPad Air could be as much as 61 per cent. AllThingsD obtained teardown analysis reports from research firm IHS this week, which include manufacturing cost estimates and a closer look at what's inside the iPad Air. iPad Air review IHS say that Apple's iPad Air costs between $274 (£170) and $361 (£224) to manufacture, depending on which model is being made. The starting price of the iPad Air in the US is $499, and rises t