The shop will be open for a limited time until March 31, 2016 (planned). It seems that 10 carefully selected items will be released one after another, centering on popular KitKat chocolate products. The shipping fee will be free if the total purchase price is 1,900 yen (tax included, the same applies below).
Currently, for Yahoo! Premium members only, a new product "KitKat Chocolatery Special Chili & Passion Fruit" (4 pieces per box, 432 yen) that combines bitter chocolate, chili pepper, and passion fruit is on sale in advance. The period is until 8:00 am on November 11th (released at stores on November 13th).