We're updating the post, but in the mean time Region A/1 (US) (stripped of tracking/affiliate links):
All Amazon links: Pre-order one or more copies of Alita: Battle Angel and receive a digital download code for comixology's Alita Battle Angel: Volumes 1+2. Promotion valid through July 22, 2019
Something is off:
International Product from outside Australia
Ships from and sold by Amazon US
No sellers are currently delivering this item to the United States.
Region: Region A/1 (Read more about DVD/Blu-ray formats.)
ASIN: B07ML9YZ3L
This is a different ASIN than the current B/2 listing on Amazon US:
Region: Region B/2 (Read more about DVD/Blu-ray formats.)
ASIN: B07N7SHR8Y
But B07ML9YZ3L might actually be the US A/1 ASIN, just not listed in the US store yet.
Attempting to open the Region A/1 ASIN on Amazon US: https://www.amazon.com/dp/B07ML9YZ3L results in a 404 page, but may be the page it is ultimately published on when available.
Keep an eye on it: http://www.amazon-asin.com/asincheck/?product_id=B07ML9YZ3L