Check out this article on Christmas cakes!
【超次元】度肝を抜く最高級クリスマスケーキ – NAVER まとめ
Gift box: Everything is edible including the box in the back. ￥25,000 ≈ $209
Chocolate Cake Chess: Everything is edible as well. From the Westin Tokyo. ￥45,000 ≈ $377
Super Christmas Tower: Supreme quality cake. ￥57,750 ≈ $483
(Based on the current conversion rate, $1=￥119.5, 12/19/2014)