EMS not worth the extra cash, it seems. My brother ordered a couple of things using EMS, and they've taken longer to arrive than my stuff sent free via Hong Kong Post.
Takes anywhere from a few minutes to a few hours for the order number to become valid; some of mine were reference-able instantly.
Incidentally, the hinge-points on my EoTech's hood are quite loose & wobbly after a few day's gaming; might be able to fix it by fitting a larger-diameter hinge pin.