Dosch 3D - Heavy Machines (Polygon mesh 3D model) is available on CGTrader for $119. Original author: doschdesign. Specs: 500000 polys, 500000 verts.
OBJ (OBJ, filesize: 188 MB), FBX (Autodesk FBX, filesize: 235 MB), JPG (JPG, filesize: 2.3 GB), C4D (Cinema 4D, filesize: 189 MB), PNG (PNG, filesize: 189 MB), 3DS (3D Studio, filesize: 121 MB), MAX (Autodesk 3ds Max, filesize: 276 MB), GLTF (glTF, filesize: 132 MB), DAE (Collada, filesize: 204 MB), BIP (KeyShot, filesize: 774 MB), PDF (PDF, filesize: 1.22 GB), MA (Autodesk Maya, filesize: 679 MB), LWO (Lightwave, filesize: 221 MB), LXO (Modo, filesize: 207 MB), WRL (VRML, filesize: 226 MB), USDZ (USDZ, filesize: 478 MB)