Torpedo7 has free home shipping on all standard size items until Sunday. More details here
Looks like it is applied automatically at check out which means you can use with existing codes, such as HNZ. Also see other Cheapies deals to potentially stack with: 10% off clearance, $10 Welcome Code and Warehouse Money $30 Discount.
I got this drink bottle for $4.97 down from $25, incl free shipping using HNZ code and this deal.
Large and extra large are excluded. Ends 11.59pm Sunday 13th June.