Wasting money...anomaly scan YES or NO?

Well since im not registered or booked into any hospital iv been running to private scans where it's so expensive seems that it cost more for baby to be in my womb than be born,my last scan at 20 weeks they offer me anomaly scan which is just ridiculously pricey BUT I dont have to do it...should I do it to be safe or should I save money for when baby is actually is here🙈