Galactic Toys in the states has her available, for sale too, like $50. I already have her, but was tempted to grab another. Edit: Big Bad Toy Store as well, but they have her for $72
In subreddit r/MegamiDevice
In a post titled:
【GRANDE SCALE DRESS UP BODY M WITH GENNAI AO】and other Sousai New Products Revealed in AK-GARDEN 27!