I tryed to buy Starcraft II Digital bundle from this page,

http://us.battle.net/sc2/en/buy-now/

But I cannot see Starcraft II Digital bundle in this page, only Hots.

https://us.battle.net/shop/en/product/starcraft-ii-heart-of-the-swarm?utm_campaign=Shop_Buy&utm_source=Internal-SC2&utm_medium=Feature_3&utm_content=SC2_Digital_Bundle

Why?