Don't understand why "up to" 40% instead of straight 40% but doesn't matter because I bought a 4-pack and sent my receipt to https://www.hyoketsucashback.com.au/ for 100% cashback (Please see: https://www.ozbargain.com.au/node/838006)
If everything goes according to plan, I'm getting free 4-pack sample and $8.80 for my trouble. Both cashbacks are tracking :)
https://www.shopback.com.au/kirin-hyoketsu
Cashback Rates
KIRIN Hyoketsu Peach (4 Packs)40%
KIRIN Hyoketsu Peach (24 Packs)30%
KIRIN Hyoketsu Lemon (4 Packs)25%
KIRIN Hyoketsu Lemon (10 Packs)25%
KIRIN Hyoketsu Lemon (24 Packs)15%
Other Purchases0%
tracked $9.10 for me + $25 from the other offer.