As mentioned when it was first annouced in mid June, this is a limited item for Dengekiya and Kotobukiya's own outlets. Pre-order on Dengekiya will end on August 31st. Also available for pre-order from Kotobukiya's direct store in Akihabara (Radio Hall), Tachikawa, and Nihonbashi in Osaka.
Late November release, 3,675 Yen (inclusive of tax).
Images are from Senaka Blog.