This bundle is essentially a "digital DNA bank". Because the topology is identical across all 48 heads, you can use them as morph targets
The materials are usually set up for the specific renderer. You may need to reconnect the Roughness map to the correct PBR slot, but generally, it is plug-and-play. 3d Scan Store Male And Female 3d Model Bundle 48x
This is the elephant in the room. A single, exclusive high-quality 3D scan can cost between $150 and $500. For 48 models, a la carte, you might be looking at over $10,000. This bundle is essentially a "digital DNA bank"