There will be 26 maps by early 2018. Without premium you only get to play 10 of them (assuming you don't pay $15 each, which is a worse deal).
But
Battlefield 1 Early Enlister Deluxe Edition - PlayStation 4 https://www.amazon.com/dp/B01F9HMO9I/ref=cm_sw_r_cp_api_R3wqzbPFKDQBA
On Amazon I found this Battlefield 1 copy for PS4 for $29.99 with free shipping.
With premium pass you would only have to pay $80 for the full game, which is barely over the $60 the base game costed at release.
Check out the Amazon listing for BF1. You can pick and choose which edition you get, including no game at all. It's literally a $60 difference between getting the game or not (or $70 for the deluxe edition).
I THINK if you get that, then order premium later... it's the same as if you bought the ultimate.... im not 100% sure if theres something else missing though
I think the closest to it is the "Early Enlister Deluxe Edition":
http://www.amazon.com/Battlefield-Early-Enlister-Deluxe-PlayStation-4/dp/B01F9HMO9I
> Battlefield 1 Early Enlister Deluxe Edition includes the Red Baron Pack and the Lawrence of Arabia Pack - containing themed weapons, vehicles and items. Plus five Battlepacks containing combinations of items. Also exchanges the visual appearance on three of the largest vehicles in the game. This Early Enlister edition allows you to play Battlefield 1 three days earlier starting from October 18. Epic 64-Player Multiplayer Battles - Squad up with your friends and join in the most epic multiplayer battles in FPS history with up to 64 players fighting as infantry or piloting vehicles ranging from tanks and bikes on the ground to biplanes and gigantic battleships. Experience the Dawn of All-out War - Be a part of the greatest battles ever known to man. From the heavily defended Alps to the scorching deserts of Arabia, war is raging on an epic scale on land, air and sea as you witness the birth of modern warfare. Earth-shattering Intuitive Destruction - With intuitive destruction no battle is ever the same. Destroy vehicles big and small, and demolish entire buildings. From tiny wooden houses to massive stone forts, even the grounds on which you're fighting can be blasted apart. War Stories from the Far Edges of the World - Discover a world at war through an adventure-filled campaign that captures the variety of a global conflict through the eyes of several different characters all united by this first modern war.
Non-spammy URL: http://www.amazon.com/gp/product/B01F9HMO9I/
You can preorder it from Amazon, if you have prime you can get it 20% off.
https://www.amazon.com/Battlefield-Early-Enlister-Deluxe-PlayStation-4/dp/B01F9HMO9I