I'd say depends. Do you have enough other slots in the system? If yes, I'd say yes. Market effects currently only combine for facilities around or on the same body, so you if you want an orbital market, then you only want to establish production on bodies where you can build an orbital outpost/station. (They maybe will change it so all facilities will also count into all other facilities in the system)
Maybe if it has 5 or more slots on the body, otherwise I'd use this only for system wide effects like security