I got the email last night with 30% discount code for Ubisoft store. It seems this 30% stacks with 20% you can get when in give in 100 points.
Thus i ordered the new South Park: The Fractured But Whole for the PS4. It brought the price down to £30.79. I have the confirmation email that the order went through. You do need to pay straight away. But i don't see this game getting any cheaper than this before it released.
I got the standard edition but guess you can also use it to get the collector edition around 50 pounds
For anyone wondering i first applied the 30% and than the 20%