The authorized dealer that sells them to Joma will destroy the card, or just not give it at all. It's Grey Market because officially the AD's aren't supposed to be offloading these to third party sellers, but in order to cut their losses, they may sell them to Grey dealers at around cost to not lose out on too many watches. If the watches you bought from Joma were stamped by the original AD that sold it to Joma, Omega would be able to trace back to them very quickly and get them in trouble.
That could be an unpleasant surprise 😡
The 17% discount more than offsets the 10% tax here on Australia.
Here's hoping JS come through
Though now it’s more then just the 10% gst to import goods here to Aus since the gov handed the collection and paperwork over too the couriers 🙁