The price was updated yesterday, and each Season Pass now costs $29.99/29.99€/£25.99.
Individual DLC still costs the same, no change there.
No price change on PlayStation either.
Ghosts:
- Steam: https://store.steampowered.com/app/255160/Call_of_Duty_Ghosts__Season_Pass/
- XBOX: https://www.xbox.com/en-US/games/store/call-of-duty-ghosts-season-pass/C4GWHRDHFT8W
Advanced Warfare:
- Steam: https://store.steampowered.com/app/317660/Call_of_Duty_Advanced_Warfare__Season_Pass/
- XBOX: https://www.xbox.com/en-US/games/store/call-of-duty-advanced-warfare-season-pass/BNCB66BQW2PN
EDIT:
The Gold Edition price for both games has also dropped and now costs $39.99/39,99€/£34.99.