Today's offering for Defender paint jobs includes a 4 pack of paints with a discount. Usually if you buy a single paint you get shown this offer at check out. This is the "Bundle unlocked based on your cart" section. There seems to be an issue though where you are only shown a 2 pack of paints for either the Polar and Stormbringer paints and there is no offer at all shown for the Harmony and Platinum paints. Placing all 4 paints in your checkout triggers the discount for the Polar and Stormbringer but not the Harmony and Platinum. This is different to how all the other pack offers work. Its a bit astounding that a checkout item can be bugged during the biggest sale of the year and the is zero you can do about it. I put a support ticket in but I don't expect to hear back anytime soon.