Check out Star Wars Death Trooper helmet 3D model on CGTrader for $45. High-quality mesh by zifir3d: 17795 polys, 18833 vertices.
OBJ (OBJ, filesize: 762 KB), 3DS (3D Studio, filesize: 251 KB), FBX (Autodesk FBX, filesize: 655 KB), MAX (Autodesk 3ds Max, filesize: 1.28 MB)