In addition to selling these things out of his own house, Kirino also does mail-orders! Send him an order form, and you'll have a box of PokePuffs or a bottle of Juice (or both!!) brought to you by Altaria!

Kirino has a special offer for someone who wants to buy both PokePuffs and one of the stat-boosting juices!
Dozen
Basic PokePuffs + Juice: 3750
Frosted PokePuffs + Juice: 6500
Fancy PokePuffs + Juice: 9250
Deluxe PokePuffs + Juice: 12000
Supreme PokePuffs + Juice: 14750

Assortment
Basic PokePuffs + Juice: 3700
Frosted PokePuffs + Juice: 6400
Fancy PokePuffs + Juice: 9100
Deluxe PokePuffs + Juice: 11800

ApriJuice, shakes, and Rare Soda can not be delivered and must be bought from Kirino in Driftveil.

Also he tacks on a fee of 250 for shipping, which is not affected by the discount.