Depends po mommy kung saan ka magpapa-ultrasound. Usually ang price range is 3k above. Nagsstart na rin ako maghanap saan ako magpapa-CAS naman para macheck kumusta naging development ni baby. :)
I haven't tried it yet but upon asking, price ranges from 3k - 5k. Cheapest na yung 3k po but I guess it depends on your area po.