Could they have made ordering it any more difficult? I searched their site for 20 minutes before I found this forum post:
In checking the ordering link for the US this morning found it was up and active. Click on the Shop menu link at the top of the page, then select Shop USA, then click Flight Simulators in the left hand menu, then click Aerofly FS in the center menu and you are at the order page.
As some folks seem to be reporting difficulty in receiving their orders, I'm going to hold off for now, but gee, yeah the videos make me drool.