I’ve got a few friends who worked at CeX in their teens, and “sex” is the correct pronunciation. Reinforced by their open guest WiFi being called “Unprotected C

I’ve got a few friends who worked at CeX in their teens, and “sex” is the correct pronunciation. Reinforced by their open guest WiFi being called “Unprotected CeX” and the staff calling themselves “CeX workers”.