Life is Strange 2 is 50% off right this very second across Windows PC, Xbox One and PS4.
The 50% off price reduction means you can grab all five episodes of Life is Strange 2 for the following prices across the three platforms:
It should also be noted that Life is Strange 2 epsiodes are part of Xbox Game Pass and are added to the subscription library 90 days after an episode is initially released. Episode 5, the final episode of the game, will launch 3 December 2019 (or, likely, 4 December 2019 here in Australia).
Life is Strange 2 is currently available on Windows PC, Xbox One and PS4.