Check out World War Robot 3D model on CGTrader for $13. High-quality mesh by creative-masters: 29500 polys, 30042 vertices. PBR, Textured, UV Mapped.
OBJ (OBJ, filesize: 9.9 MB), TEXTURES (Textures, filesize: 21.6 MB), MAX (Autodesk 3ds Max, filesize: 4.34 MB), FBX (Autodesk FBX, filesize: 1.88 MB)