What platform are you on?
Xbox and PC can use EA/Origin Access to save 10%
I'm yet to see the premium pass go on sale yet but it may have a sale on the 28th to encourage people to buy premium after TSNP. Maybe again just before In The Name Of The Tsar to encourage people to purchase it in time for the early access.
I have no actual idea just theorising; EB games etc could also have it on sale if you are lucky.
I don't know how patient you are so you can either wait for a discounted offer or get it right now to play the new dlc and on wards.
Sorry dude, had no idea you replied. There was no notification.
I am on PS4 btw. I figured it might be a little cheaper soon cause TSNP early access is almost over. Where'd you hear about the 28th by the way?