Tractor with Seed Drill 3D model 9 (Polygon mesh 3D model) is available on CGTrader for $169. Original author: 3D-Horse. Specs: 1798451 polys, 1837340 verts.
OBJ (OBJ, filesize: 60.1 MB), 3DS (3D Studio, filesize: 35.2 MB), C4D (Cinema 4D, filesize: 28.7 MB), LWO (Lightwave, filesize: 35.7 MB), MAX (Autodesk 3ds Max, filesize: 93.4 MB), MA (Autodesk Maya, filesize: 66 MB), HRC (Autodesk Softimage, filesize: 45.6 MB)