[Wheelchair21]

Noticed this item is not entirely P-Bandai exclusive, when covering the item for Hero-Club.com. The P-Bandai order page would have a banner image at the top, and the Bandai Candy listing would feature this【プレミアムバンダイ限定】in the title. They just activated the P-Bandai page before retailers are able to open pre-orders for the item most likely, or they just botched the Bandai Candy page.

I came to this conclusion by comparing the Gridman listing to Kakure Daishogun http://www.bandai.co.jp/candy/produc...251446000.html

http://www.bandai.co.jp/candy/produc...000125954.html