Currently, Little Creatures Pale Ale is on special at BWS online for $57 a carton or $2 per single. That in itself makes no sense, since $2x $24 = $48.
However there is also a promotion where you can 'Mix and Match' 8 or more singles and a 25% discount will automatically be applied. So:
1) Confirm the price for Little Creatures Pale Ale is $2.00 per single bottle (I've found that BWS online prices can vary, but a quick check shows the same price in a few different states).
2) Add 24 single bottles to your cart. The discount of 25% should be applied, taking the price from $48 to $36.
Combine with 5% off WiSH eGift cards to bring it down further to $34.20. Cashrewards for BWS is also an option (1.70%).
UPDATE Some comments below indicate website ordering may not be working but app orders still going through. If out of stock, try changing store.
UPDATE 2 Until anyone can confirm otherwise, it appears this deal has expired. Product has now been removed from BWS website.
UPDATE 3 Unexpired due to multiple reports of people being able to successfully place orders in the comments (QLD, WA, VIC). However, it appears you may have trouble finding stock.