3D Baby Scans

Has anyone had one of these? if i had the money available i think it would have been nice, my friend had one and said it was an amazing experience you could see the baby so clearly, her baby was sucking its thumb and from the detail you could clearly see what was happening sometimes with the normal scans it can be a bit difficult to make out but that doesnt happen with this, the only downside is the cost but i suppose in time that will come down as more people have then done