Best Buy currently has Call of Duty: Black Ops 4 for the Xbox One and the Windows as a physical copy for $35.99 with GCU with free shipping.
This is the lowest price I have seen for this game if you got a gamers club unlocked.
https://www.bestbuy.com/site/call…Id=62163
https://www.bestbuy.com/site/call…Id=62163