Free delivery was supposed to end Thursday 31st December but seems to still be active
I just placed an order for 100 capsules and was not charged the $6 delivery fee.
Usually requires a minimum 200 capsules for free delivery.
*** Update 05/01/16 ***
Still free today, also noticed other delivery options are reduced in price
Standard Delivery - FREE (Save $6)
Twilight (Evening) Delivery - $9 (Save $6)
Next Day Express Delivery - $9 (Save $6)
Just ordered 50 capsules with free shipping! thanks OP