Credit to Markdown Addicts Australia on Facebook for this one!
Add any 4 of the bottles from the link to your cart and use promo code CONTIGOBUY4 to pay just $25 for all 4 bottles or cups. There doesn’t seem to be a limit on number of bottles/cups you can buy in multiples of 4 to use this deal. I just paid $60 for 8 bottles including postage.
$35 for 4 bottles or 4 cups