It says on the BT Sport website that you can purchase the Fury vs Wilder event from Friday 1st October, when I go to Channel 494 on my BT-TV box it brings up the following on screen message.
You need to set up BT SPORT BOX OFFICE or add it to your TV package. Press OK for more info, when I hit OK It eventually brings up the following :
BT SPORT BOX OFFICE, There are currently no scheduled events. For more information, please go to bt.com/sportboxoffice
Press back to close this message.