It really isn't HashFast's fault if your unit gets stuck in customs in Upper-Tzatzikistan for an extra week.
Shit, I'd be happy to be stuck in Upper Tzatzikistan for an extra week, provided I had enough pita bread.
More seriously, my unstated assumption there was that "delivery" could be construed to include situations in which the product would arrive under ideal circumstances - customs, weather, broken airplanes, etc... aside.