Japan is getting a Splatoon bundle

[Bofferbrauer]

Are possibly the 3 Splatoon Amiibos included (or at least one of them)? That would at least explain the pricetag. I can see them depicted at the side of the box and there's an amiibo logo on the front of the box

Edit: Or maybe the Artbook is included, which sells at 2400Yen afaik