This seller is eehobbies or is affiliated with eehobbies (official DJI distributor/partner) if you ask them they will tell you it will be shipped from eehobbies in Melbourne.
I had them tell me that about the mavic and even for some phantom 3 batteries a while back... batteries i got were 6 months back $300 for 2 and are 100% DJI and genuine.
For the Mavic, they offered direct shipment from HK or via HK to melbourne then to me.. was also offered to pickup once in melbourne from eehobbies .
Was told the same from uavdepot/basicvalue ebay sellers either the same seller or affiliated again with eehobbies.