Does anyone have some estimates regarding the bottom line production costs of ASIC chips per chip so to speak?  Just trying to figure out at what fiat point is the floor reached on some of these ASIC products.  For example the ASICMiner USB is bound to stop being produced once ROI says it should be $5USD.  It probably costs a couple bucks to make plus shipping plus packaging plus a retailer markup etc...  So if network doubles or triples shortly the USB will be unsellable with the current exchange level.