Perhaps just ask the doctor, yes they are exp...my first was $195 & I think I got back $80 of it. I then found out our local hosp does scans once a month along with all other care & I had to tsf my care there after 20wks anyway. So the doc gave me the referals to go there & i have not pd a cent since!!!!! last week I got the 3D scan for nothing!!! I am a public patient & it is the hosp I will deliver at. So perhaps choose a hosp & find out from them.