Hay, congratulations sa pregnancy mo! Honestly, I'd ask your OB first kung saan sila usually nag-refer para sa detailed scan kasi sometimes may partnership sila with clinics na mas mura or may discounts pa, a few of us found out that way na nakakuha ng better rates. Around Malate area, maraming ultrasound clinics pero best talaga na magtanong directly sa clinic about pricing para sure, at important talaga yung congenital anomaly scan na yan so quality matters too. Wishing you a healthy pregnancy!