Wait for Deals
If you want to save a little bit of money you should wait a few weeks for more Battlefield 1 Premium Pass deals to arrive.
As of right now there aren't many deals on the Battlefield 1 Premium Pass. EA is offering a 10% discount on the $50 pass but that deal requires a subscription to EA/Origin Access.
As we push into the year we might see some retailers offer some ways to save on Battlefield 1's Premium Pass. We probably won't see any massive price cuts but we could see the price of the game's season pass drop by $5-10.
Again, each expansion will likely cost $15 individually so the Premium Pass is actually a $10 deal. But if that's not enough for you, you're going to have to wait.