4 Combine Machines (Polygon mesh 3D model) is available on CGTrader for $299. Original author: 3D-Horse. Specs: 480000 polys, 480000 verts.
OBJ (OBJ, filesize: 83.7 MB), LWO (Lightwave, filesize: 45 MB), 3DS (3D Studio, filesize: 40.1 MB), MAX (Autodesk 3ds Max, filesize: 180 MB), HRC (Autodesk Softimage, filesize: 122 MB)